397708315 has 8 divisors (see below), whose sum is σ = 484373520. Its totient is φ = 313417632.

The previous prime is 397708309. The next prime is 397708373. The reversal of 397708315 is 513807793.

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

It is a cyclic number.

It is not a de Polignac number, because 397708315 - 2⁷ = 397708187 is a prime.

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, 593260 + ... + 593929.

It is an arithmetic number, because the mean of its divisors is an integer number (60546690).

Almost surely, 2^397708315 is an apocalyptic number.

397708315 is a deficient number, since it is larger than the sum of its proper divisors (86665205).

397708315 is a wasteful number, since it uses less digits than its factorization.

397708315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1187261.

The product of its (nonzero) digits is 158760, while the sum is 43.

The square root of 397708315 is about 19942.6255793965. The cubic root of 397708315 is about 735.3964973171.

The spelling of 397708315 in words is "three hundred ninety-seven million, seven hundred eight thousand, three hundred fifteen".