398715092 has 12 divisors (see below), whose sum is σ = 713978496. Its totient is φ = 194721240.

The previous prime is 398715091. The next prime is 398715139. The reversal of 398715092 is 290517893.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398715091) 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, 1158884 + ... + 1159227.

It is an arithmetic number, because the mean of its divisors is an integer number (59498208).

Almost surely, 2^398715092 is an apocalyptic number.

It is an amenable number.

398715092 is a deficient number, since it is larger than the sum of its proper divisors (315263404).

398715092 is a wasteful number, since it uses less digits than its factorization.

398715092 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2318158 (or 2318156 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 44.

The square root of 398715092 is about 19967.8514617873. The cubic root of 398715092 is about 736.0165131968.

The spelling of 398715092 in words is "three hundred ninety-eight million, seven hundred fifteen thousand, ninety-two".