397599 has 4 divisors (see below), whose sum is σ = 530136. Its totient is φ = 265064.

The previous prime is 397597. The next prime is 397633. The reversal of 397599 is 995793.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 397599 - 2¹ = 397597 is a prime.

It is a D-number.

397599 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 397599.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (397591) 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, 66264 + ... + 66269.

It is an arithmetic number, because the mean of its divisors is an integer number (132534).

2³⁹⁷⁵⁹⁹ is an apocalyptic number.

397599 is a deficient number, since it is larger than the sum of its proper divisors (132537).

397599 is a wasteful number, since it uses less digits than its factorization.

397599 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132536.

The product of its digits is 76545, while the sum is 42.

The square root of 397599 is about 630.5545178650. The cubic root of 397599 is about 73.5329113566.

The spelling of 397599 in words is "three hundred ninety-seven thousand, five hundred ninety-nine".