398974465 has 16 divisors (see below), whose sum is σ = 489897216. Its totient is φ = 311832000.

The previous prime is 398974453. The next prime is 398974501. The reversal of 398974465 is 564479893.

It is not a de Polignac number, because 398974465 - 2⁷ = 398974337 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41724 + ... + 50386.

It is an arithmetic number, because the mean of its divisors is an integer number (30618576).

Almost surely, 2^398974465 is an apocalyptic number.

It is an amenable number.

398974465 is a deficient number, since it is larger than the sum of its proper divisors (90922751).

398974465 is a wasteful number, since it uses less digits than its factorization.

398974465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8880.

The product of its digits is 6531840, while the sum is 55.

The square root of 398974465 is about 19974.3451707434. The cubic root of 398974465 is about 736.1760769507.

The spelling of 398974465 in words is "three hundred ninety-eight million, nine hundred seventy-four thousand, four hundred sixty-five".