397213366 has 8 divisors (see below), whose sum is σ = 649985544. Its totient is φ = 180551520.

The previous prime is 397213301. The next prime is 397213379. The reversal of 397213366 is 663312793.

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

It is a congruent number.

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, 9027555 + ... + 9027598.

It is an arithmetic number, because the mean of its divisors is an integer number (81248193).

Almost surely, 2^397213366 is an apocalyptic number.

397213366 is a deficient number, since it is larger than the sum of its proper divisors (252772178).

397213366 is a wasteful number, since it uses less digits than its factorization.

397213366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18055166.

The product of its digits is 122472, while the sum is 40.

The square root of 397213366 is about 19930.2123922451. The cubic root of 397213366 is about 735.0913030792.

The spelling of 397213366 in words is "three hundred ninety-seven million, two hundred thirteen thousand, three hundred sixty-six".