398368956 has 48 divisors (see below), whose sum is σ = 1008231840. Its totient is φ = 121927680.

The previous prime is 398368931. The next prime is 398368961. The reversal of 398368956 is 659863893.

It is a junction number, because it is equal to n+sod(n) for n = 398368896 and 398368905.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15451 + ... + 32178.

It is an arithmetic number, because the mean of its divisors is an integer number (21004830).

Almost surely, 2^398368956 is an apocalyptic number.

It is an amenable number.

398368956 is an abundant number, since it is smaller than the sum of its proper divisors (609862884).

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

398368956 is a wasteful number, since it uses less digits than its factorization.

398368956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47694 (or 47692 counting only the distinct ones).

The product of its digits is 8398080, while the sum is 57.

The square root of 398368956 is about 19959.1822477776. The cubic root of 398368956 is about 735.8034658567.

The spelling of 398368956 in words is "three hundred ninety-eight million, three hundred sixty-eight thousand, nine hundred fifty-six".