397439 has 6 divisors (see below), whose sum is σ = 462384. Its totient is φ = 340620.

The previous prime is 397433. The next prime is 397459. The reversal of 397439 is 934793.

It is not a de Polignac number, because 397439 - 2⁸ = 397183 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 397399 and 397408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (397433) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4007 + ... + 4104.

It is an arithmetic number, because the mean of its divisors is an integer number (77064).

2³⁹⁷⁴³⁹ is an apocalyptic number.

397439 is a deficient number, since it is larger than the sum of its proper divisors (64945).

397439 is an equidigital number, since it uses as much as digits as its factorization.

397439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8125 (or 8118 counting only the distinct ones).

The product of its digits is 20412, while the sum is 35.

The square root of 397439 is about 630.4276326431. The cubic root of 397439 is about 73.5230464388.

The spelling of 397439 in words is "three hundred ninety-seven thousand, four hundred thirty-nine".