397150815 has 8 divisors (see below), whose sum is σ = 635441328. Its totient is φ = 211813760.

The previous prime is 397150759. The next prime is 397150847. The reversal of 397150815 is 518051793.

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

It is not a de Polignac number, because 397150815 - 2¹⁷ = 397019743 is a prime.

It is a congruent number.

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, 13238346 + ... + 13238375.

It is an arithmetic number, because the mean of its divisors is an integer number (79430166).

Almost surely, 2^397150815 is an apocalyptic number.

397150815 is a deficient number, since it is larger than the sum of its proper divisors (238290513).

397150815 is a wasteful number, since it uses less digits than its factorization.

397150815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26476729.

The product of its (nonzero) digits is 37800, while the sum is 39.

The square root of 397150815 is about 19928.6430797483. The cubic root of 397150815 is about 735.0527149937.

The spelling of 397150815 in words is "three hundred ninety-seven million, one hundred fifty thousand, eight hundred fifteen".