398696904 has 192 divisors, whose sum is σ = 1205043840. Its totient is φ = 123171840.

The previous prime is 398696861. The next prime is 398696951. The reversal of 398696904 is 409696893.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1654224 + ... + 1654464.

It is an arithmetic number, because the mean of its divisors is an integer number (6276270).

Almost surely, 2^398696904 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 398696904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (602521920).

398696904 is an abundant number, since it is smaller than the sum of its proper divisors (806346936).

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

398696904 is a wasteful number, since it uses less digits than its factorization.

398696904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 322 (or 306 counting only the distinct ones).

The product of its (nonzero) digits is 2519424, while the sum is 54.

The square root of 398696904 is about 19967.3960245196. The cubic root of 398696904 is about 736.0053215195.

The spelling of 398696904 in words is "three hundred ninety-eight million, six hundred ninety-six thousand, nine hundred four".