397423078 has 8 divisors (see below), whose sum is σ = 641991168. Its totient is φ = 183426024.

The previous prime is 397423073. The next prime is 397423079. The reversal of 397423078 is 870324793.

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 (397423073) 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, 7642726 + ... + 7642777.

It is an arithmetic number, because the mean of its divisors is an integer number (80248896).

Almost surely, 2^397423078 is an apocalyptic number.

397423078 is a deficient number, since it is larger than the sum of its proper divisors (244568090).

397423078 is a wasteful number, since it uses less digits than its factorization.

397423078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15285518.

The product of its (nonzero) digits is 254016, while the sum is 43.

The square root of 397423078 is about 19935.4728561928. The cubic root of 397423078 is about 735.2206461132.

The spelling of 397423078 in words is "three hundred ninety-seven million, four hundred twenty-three thousand, seventy-eight".