397515 has 8 divisors (see below), whose sum is σ = 636048. Its totient is φ = 212000.

The previous prime is 397493. The next prime is 397517. The reversal of 397515 is 515793.

It is a happy number.

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

It is not a de Polignac number, because 397515 - 2⁸ = 397259 is a prime.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (397517) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13236 + ... + 13265.

It is an arithmetic number, because the mean of its divisors is an integer number (79506).

2³⁹⁷⁵¹⁵ is an apocalyptic number.

397515 is a deficient number, since it is larger than the sum of its proper divisors (238533).

397515 is a wasteful number, since it uses less digits than its factorization.

397515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26509.

The product of its digits is 4725, while the sum is 30.

The square root of 397515 is about 630.4879063075. The cubic root of 397515 is about 73.5277326048.

The spelling of 397515 in words is "three hundred ninety-seven thousand, five hundred fifteen".