398672308 has 6 divisors (see below), whose sum is σ = 697676546. Its totient is φ = 199336152.

The previous prime is 398672291. The next prime is 398672347. The reversal of 398672308 is 803276893.

It can be written as a sum of positive squares in only one way, i.e., 397284624 + 1387684 = 19932^2 + 1178^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49834035 + ... + 49834042.

Almost surely, 2^398672308 is an apocalyptic number.

It is an amenable number.

398672308 is a deficient number, since it is larger than the sum of its proper divisors (299004238).

398672308 is a wasteful number, since it uses less digits than its factorization.

398672308 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99668081 (or 99668079 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 46.

The square root of 398672308 is about 19966.7801109743. The cubic root of 398672308 is about 735.9901862467.

The spelling of 398672308 in words is "three hundred ninety-eight million, six hundred seventy-two thousand, three hundred eight".