Search a number
-
+
389867413 = 1347936257
BaseRepresentation
bin10111001111001…
…110011110010101
31000011121022112211
4113033032132111
51244301224123
6102404113421
712442550455
oct2717163625
91004538484
10389867413
11190085181
12aa695871
1362a045a0
1439ac7d65
152436140d
hex173ce795

389867413 has 8 divisors (see below), whose sum is σ = 420011928. Its totient is φ = 359745024.

The previous prime is 389867371. The next prime is 389867431. The reversal of 389867413 is 314768983.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 178543044 + 211324369 = 13362^2 + 14537^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 389867413 - 29 = 389866901 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (389867473) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59181 + ... + 65437.

It is an arithmetic number, because the mean of its divisors is an integer number (52501491).

Almost surely, 2389867413 is an apocalyptic number.

It is an amenable number.

389867413 is a deficient number, since it is larger than the sum of its proper divisors (30144515).

389867413 is a wasteful number, since it uses less digits than its factorization.

389867413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11063.

The product of its digits is 870912, while the sum is 49.

The square root of 389867413 is about 19745.0604709127. The cubic root of 389867413 is about 730.5315531794.

The spelling of 389867413 in words is "three hundred eighty-nine million, eight hundred sixty-seven thousand, four hundred thirteen".

Divisors: 1 13 4793 6257 62309 81341 29989801 389867413