398934956 has 12 divisors (see below), whose sum is σ = 797869968. Its totient is φ = 170972112.

The previous prime is 398934953. The next prime is 398934967. The reversal of 398934956 is 659439893.

398934956 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (398934953) 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, 7123811 + ... + 7123866.

It is an arithmetic number, because the mean of its divisors is an integer number (66489164).

Almost surely, 2^398934956 is an apocalyptic number.

It is an amenable number.

398934956 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

398934956 is a wasteful number, since it uses less digits than its factorization.

398934956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14247688 (or 14247686 counting only the distinct ones).

The product of its digits is 6298560, while the sum is 56.

The square root of 398934956 is about 19973.3561526349. The cubic root of 398934956 is about 736.1517758627.

The spelling of 398934956 in words is "three hundred ninety-eight million, nine hundred thirty-four thousand, nine hundred fifty-six".