398965056 has 84 divisors (see below), whose sum is σ = 1227966048. Its totient is φ = 113987328.

The previous prime is 398965033. The next prime is 398965057. The reversal of 398965056 is 650569893.

It is a tau number, because it is divible by the number of its divisors (84).

It is a super-3 number, since 3×398965056³ (a number of 27 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398965057) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11796 + ... + 30611.

Almost surely, 2^398965056 is an apocalyptic number.

It is an amenable number.

398965056 is an abundant number, since it is smaller than the sum of its proper divisors (829000992).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

398965056 is a wasteful number, since it uses less digits than its factorization.

398965056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42436 (or 42419 counting only the distinct ones).

The product of its (nonzero) digits is 1749600, while the sum is 51.

The square root of 398965056 is about 19974.1096422344. The cubic root of 398965056 is about 736.1702898342.

The spelling of 398965056 in words is "three hundred ninety-eight million, nine hundred sixty-five thousand, fifty-six".