398904406254 has 24 divisors (see below), whose sum is σ = 864660599712. Its totient is φ = 132911563200.

The previous prime is 398904406247. The next prime is 398904406261. The reversal of 398904406254 is 452604409893.

398904406254 is a `hidden beast` number, since 3 + 9 + 8 + 9 + 0 + 4 + 4 + 0 + 625 + 4 = 666.

It is an interprime number because it is at equal distance from previous prime (398904406247) and next prime (398904406261).

It is a self number, because there is not a number n which added to its sum of digits gives 398904406254.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4670859 + ... + 4755494.

It is an arithmetic number, because the mean of its divisors is an integer number (36027524988).

Almost surely, 2^398904406254 is an apocalyptic number.

398904406254 is an abundant number, since it is smaller than the sum of its proper divisors (465756193458).

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

398904406254 is a wasteful number, since it uses less digits than its factorization.

398904406254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9428712 (or 9428709 counting only the distinct ones).

The product of its (nonzero) digits is 7464960, while the sum is 54.

The spelling of 398904406254 in words is "three hundred ninety-eight billion, nine hundred four million, four hundred six thousand, two hundred fifty-four".