397465 has 4 divisors (see below), whose sum is σ = 476964. Its totient is φ = 317968.

The previous prime is 397459. The next prime is 397469. The reversal of 397465 is 564793.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 259081 + 138384 = 509^2 + 372^2 .

It is a cyclic number.

It is not a de Polignac number, because 397465 - 2⁵ = 397433 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 397465.

It is not an unprimeable number, because it can be changed into a prime (397469) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39742 + ... + 39751.

It is an arithmetic number, because the mean of its divisors is an integer number (119241).

2³⁹⁷⁴⁶⁵ is an apocalyptic number.

It is an amenable number.

397465 is a deficient number, since it is larger than the sum of its proper divisors (79499).

397465 is an equidigital number, since it uses as much as digits as its factorization.

397465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79498.

The product of its digits is 22680, while the sum is 34.

The square root of 397465 is about 630.4482532294. The cubic root of 397465 is about 73.5246496681.

The spelling of 397465 in words is "three hundred ninety-seven thousand, four hundred sixty-five".