397982994 has 16 divisors (see below), whose sum is σ = 796370400. Its totient is φ = 132593600.

The previous prime is 397982953. The next prime is 397983029. The reversal of 397982994 is 499289793.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3207 + ... + 28394.

It is an arithmetic number, because the mean of its divisors is an integer number (49773150).

Almost surely, 2^397982994 is an apocalyptic number.

397982994 is an abundant number, since it is smaller than the sum of its proper divisors (398387406).

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

397982994 is a wasteful number, since it uses less digits than its factorization.

397982994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33705.

The product of its digits is 8817984, while the sum is 60.

The square root of 397982994 is about 19949.5111218295. The cubic root of 397982994 is about 735.5657599660.

The spelling of 397982994 in words is "three hundred ninety-seven million, nine hundred eighty-two thousand, nine hundred ninety-four".