398690712 has 48 divisors (see below), whose sum is σ = 1234044240. Its totient is φ = 113911488.

The previous prime is 398690657. The next prime is 398690723. The reversal of 398690712 is 217096893.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 395023 + ... + 396030.

It is an arithmetic number, because the mean of its divisors is an integer number (25709255).

Almost surely, 2^398690712 is an apocalyptic number.

It is an amenable number.

398690712 is an abundant number, since it is smaller than the sum of its proper divisors (835353528).

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

398690712 is a wasteful number, since it uses less digits than its factorization.

398690712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 791072 (or 791065 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 45.

The square root of 398690712 is about 19967.2409711507. The cubic root of 398690712 is about 736.0015112997.

The spelling of 398690712 in words is "three hundred ninety-eight million, six hundred ninety thousand, seven hundred twelve".