397559 has 4 divisors (see below), whose sum is σ = 399960. Its totient is φ = 395160.

The previous prime is 397549. The next prime is 397567. The reversal of 397559 is 955793.

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 397559 - 2⁴ = 397543 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (397519) 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, 932 + ... + 1289.

It is an arithmetic number, because the mean of its divisors is an integer number (99990).

2³⁹⁷⁵⁵⁹ is an apocalyptic number.

397559 is a deficient number, since it is larger than the sum of its proper divisors (2401).

397559 is a wasteful number, since it uses less digits than its factorization.

397559 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2400.

The product of its digits is 42525, while the sum is 38.

The square root of 397559 is about 630.5227989534. The cubic root of 397559 is about 73.5304453753.

The spelling of 397559 in words is "three hundred ninety-seven thousand, five hundred fifty-nine".