Search a number
-
+
492380069 = 677727297
BaseRepresentation
bin11101010110010…
…001111110100101
31021022111111110212
4131112101332211
52002022130234
6120505225205
715126106256
oct3526217645
91238444425
10492380069
11232a32485
12118a92205
137b01796c
1449570b2d
152d3605ce
hex1d591fa5

492380069 has 4 divisors (see below), whose sum is σ = 493108044. Its totient is φ = 491652096.

The previous prime is 492380059. The next prime is 492380071. The reversal of 492380069 is 960083294.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 960083294 = 2480041647.

It can be written as a sum of positive squares in 2 ways, for example, as 293711044 + 198669025 = 17138^2 + 14095^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-492380069 is a prime.

It is a super-2 number, since 2×4923800692 = 484876264696889522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (492380039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 362972 + ... + 364325.

It is an arithmetic number, because the mean of its divisors is an integer number (123277011).

Almost surely, 2492380069 is an apocalyptic number.

It is an amenable number.

492380069 is a deficient number, since it is larger than the sum of its proper divisors (727975).

492380069 is an equidigital number, since it uses as much as digits as its factorization.

492380069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 727974.

The product of its (nonzero) digits is 93312, while the sum is 41.

The square root of 492380069 is about 22189.6387757890. The cubic root of 492380069 is about 789.6479064440.

The spelling of 492380069 in words is "four hundred ninety-two million, three hundred eighty thousand, sixty-nine".

Divisors: 1 677 727297 492380069