397039215 has 16 divisors (see below), whose sum is σ = 642918528. Its totient is φ = 209202336.

The previous prime is 397039213. The next prime is 397039217. The reversal of 397039215 is 512930793.

It is an interprime number because it is at equal distance from previous prime (397039213) and next prime (397039217).

It is not a de Polignac number, because 397039215 - 2¹ = 397039213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (397039213) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 158209 + ... + 160698.

It is an arithmetic number, because the mean of its divisors is an integer number (40182408).

Almost surely, 2^397039215 is an apocalyptic number.

397039215 is a deficient number, since it is larger than the sum of its proper divisors (245879313).

397039215 is a wasteful number, since it uses less digits than its factorization.

397039215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318998.

The product of its (nonzero) digits is 51030, while the sum is 39.

The square root of 397039215 is about 19925.8428930874. The cubic root of 397039215 is about 734.9838582229.

The spelling of 397039215 in words is "three hundred ninety-seven million, thirty-nine thousand, two hundred fifteen".