398976256 has 36 divisors (see below), whose sum is σ = 910168672. Its totient is φ = 170989056.

The previous prime is 398976251. The next prime is 398976283. The reversal of 398976256 is 652679893.

It is a junction number, because it is equal to n+sod(n) for n = 398976197 and 398976206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398976251) 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, 109530 + ... + 113113.

Almost surely, 2^398976256 is an apocalyptic number.

It is an amenable number.

398976256 is an abundant number, since it is smaller than the sum of its proper divisors (511192416).

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

398976256 is an equidigital number, since it uses as much as digits as its factorization.

398976256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222666 (or 222652 counting only the distinct ones).

The product of its digits is 4898880, while the sum is 55.

The square root of 398976256 is about 19974.3900032016. The cubic root of 398976256 is about 736.1771785161.

The spelling of 398976256 in words is "three hundred ninety-eight million, nine hundred seventy-six thousand, two hundred fifty-six".