397526 has 8 divisors (see below), whose sum is σ = 609120. Its totient is φ = 194488.

The previous prime is 397519. The next prime is 397541. The reversal of 397526 is 625793.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 397492 and 397501.

It is a congruent number.

It is an unprimeable number.

397526 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2021 + ... + 2208.

It is an arithmetic number, because the mean of its divisors is an integer number (76140).

397526 is a Friedman number, since it can be written as (7+6^2)^3*5-9, using all its digits and the basic arithmetic operations.

2³⁹⁷⁵²⁶ is an apocalyptic number.

397526 is a deficient number, since it is larger than the sum of its proper divisors (211594).

397526 is a wasteful number, since it uses less digits than its factorization.

397526 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4278.

The product of its digits is 11340, while the sum is 32.

The square root of 397526 is about 630.4966296500. The cubic root of 397526 is about 73.5284108162.

The spelling of 397526 in words is "three hundred ninety-seven thousand, five hundred twenty-six".