397807934 has 8 divisors (see below), whose sum is σ = 615960768. Its totient is φ = 192487680.

The previous prime is 397807889. The next prime is 397807937. The reversal of 397807934 is 439708793.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (397807937) 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, 3208067 + ... + 3208190.

It is an arithmetic number, because the mean of its divisors is an integer number (76995096).

Almost surely, 2^397807934 is an apocalyptic number.

397807934 is a deficient number, since it is larger than the sum of its proper divisors (218152834).

397807934 is a wasteful number, since it uses less digits than its factorization.

397807934 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6416290.

The product of its (nonzero) digits is 1143072, while the sum is 50.

The square root of 397807934 is about 19945.1230630448. The cubic root of 397807934 is about 735.4578935255.

The spelling of 397807934 in words is "three hundred ninety-seven million, eight hundred seven thousand, nine hundred thirty-four".