Search a number
-
+
471923087 = 2931610659
BaseRepresentation
bin11100001000001…
…111100110001111
31012220000011202212
4130020033212033
51431303014322
6114454541035
714460165026
oct3410174617
91186004685
10471923087
1122242a889
1211206777b
1376a0453c
14469678bd
152b66e0e2
hex1c20f98f

471923087 has 4 divisors (see below), whose sum is σ = 473534040. Its totient is φ = 470312136.

The previous prime is 471923069. The next prime is 471923113. The reversal of 471923087 is 780329174.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 780329174 = 2390164587.

It is a cyclic number.

It is not a de Polignac number, because 471923087 - 28 = 471922831 is a prime.

It is a super-2 number, since 2×4719230872 = 445422800087219138, 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 (471923047) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 805037 + ... + 805622.

It is an arithmetic number, because the mean of its divisors is an integer number (118383510).

Almost surely, 2471923087 is an apocalyptic number.

471923087 is a deficient number, since it is larger than the sum of its proper divisors (1610953).

471923087 is a wasteful number, since it uses less digits than its factorization.

471923087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1610952.

The product of its (nonzero) digits is 84672, while the sum is 41.

The square root of 471923087 is about 21723.7908063947. The cubic root of 471923087 is about 778.5569896297.

The spelling of 471923087 in words is "four hundred seventy-one million, nine hundred twenty-three thousand, eighty-seven".

Divisors: 1 293 1610659 471923087