397544 has 32 divisors (see below), whose sum is σ = 883200. Its totient is φ = 164160.

The previous prime is 397543. The next prime is 397547. The reversal of 397544 is 445793.

It is a self number, because there is not a number n which added to its sum of digits gives 397544.

It is not an unprimeable number, because it can be changed into a prime (397541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1622 + ... + 1850.

It is an arithmetic number, because the mean of its divisors is an integer number (27600).

397544 is a Friedman number, since it can be written as 9+43^(7-4)*5, using all its digits and the basic arithmetic operations.

2³⁹⁷⁵⁴⁴ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 397544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (441600).

397544 is an abundant number, since it is smaller than the sum of its proper divisors (485656).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

397544 is a wasteful number, since it uses less digits than its factorization.

397544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 273 (or 269 counting only the distinct ones).

The product of its digits is 15120, while the sum is 32.

The square root of 397544 is about 630.5109039501. The cubic root of 397544 is about 73.5295205896.

The spelling of 397544 in words is "three hundred ninety-seven thousand, five hundred forty-four".