398742472 has 16 divisors (see below), whose sum is σ = 750288240. Its totient is φ = 198665616.

The previous prime is 398742437. The next prime is 398742481. The reversal of 398742472 is 274247893.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 85798 + ... + 90325.

It is an arithmetic number, because the mean of its divisors is an integer number (46893015).

Almost surely, 2^398742472 is an apocalyptic number.

It is an amenable number.

398742472 is a deficient number, since it is larger than the sum of its proper divisors (351545768).

398742472 is a wasteful number, since it uses less digits than its factorization.

398742472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176412 (or 176408 counting only the distinct ones).

The product of its digits is 677376, while the sum is 46.

The square root of 398742472 is about 19968.5370520727. The cubic root of 398742472 is about 736.0333603735.

The spelling of 398742472 in words is "three hundred ninety-eight million, seven hundred forty-two thousand, four hundred seventy-two".