397497 has 4 divisors (see below), whose sum is σ = 530000. Its totient is φ = 264996.

The previous prime is 397493. The next prime is 397517. The reversal of 397497 is 794793.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 794793 = 3 ⋅264931.

It is not a de Polignac number, because 397497 - 2² = 397493 is a prime.

It is a D-number.

It is a Duffinian number.

397497 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (397493) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66247 + ... + 66252.

It is an arithmetic number, because the mean of its divisors is an integer number (132500).

2³⁹⁷⁴⁹⁷ is an apocalyptic number.

It is an amenable number.

397497 is a deficient number, since it is larger than the sum of its proper divisors (132503).

397497 is a wasteful number, since it uses less digits than its factorization.

397497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132502.

The product of its digits is 47628, while the sum is 39.

The square root of 397497 is about 630.4736314867. The cubic root of 397497 is about 73.5266227774.

The spelling of 397497 in words is "three hundred ninety-seven thousand, four hundred ninety-seven".