397389874 has 8 divisors (see below), whose sum is σ = 681239808. Its totient is φ = 170309940.

The previous prime is 397389859. The next prime is 397389877. The reversal of 397389874 is 478983793.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (397389877) 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, 14192482 + ... + 14192509.

It is an arithmetic number, because the mean of its divisors is an integer number (85154976).

Almost surely, 2^397389874 is an apocalyptic number.

397389874 is a deficient number, since it is larger than the sum of its proper divisors (283849934).

397389874 is a wasteful number, since it uses less digits than its factorization.

397389874 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28385000.

The product of its digits is 9144576, while the sum is 58.

The square root of 397389874 is about 19934.6400519297. The cubic root of 397389874 is about 735.2001700785.

The spelling of 397389874 in words is "three hundred ninety-seven million, three hundred eighty-nine thousand, eight hundred seventy-four".