397535 has 8 divisors (see below), whose sum is σ = 488400. Its totient is φ = 310632.

The previous prime is 397519. The next prime is 397541. The reversal of 397535 is 535793.

It is not a de Polignac number, because 397535 - 2⁴ = 397519 is a prime.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9224 + ... + 9266.

It is an arithmetic number, because the mean of its divisors is an integer number (61050).

397535 is a Friedman number, since it can be written as 5*((9+7)*3-5)^3, using all its digits and the basic arithmetic operations.

2³⁹⁷⁵³⁵ is an apocalyptic number.

397535 is a deficient number, since it is larger than the sum of its proper divisors (90865).

397535 is an frugal number, since it uses more digits than its factorization.

397535 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134 (or 48 counting only the distinct ones).

The product of its digits is 14175, while the sum is 32.

The square root of 397535 is about 630.5037668405. The cubic root of 397535 is about 73.5289657071.

It can be divided in two parts, 39753 and 5, that multiplied together give a triangular number (198765 = T₆₃₀).

The spelling of 397535 in words is "three hundred ninety-seven thousand, five hundred thirty-five".