397304544 has 288 divisors, whose sum is σ = 1339299360. Its totient is φ = 102187008.

The previous prime is 397304543. The next prime is 397304561. The reversal of 397304544 is 445403793.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (397304543) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4464052 + ... + 4464140.

It is an arithmetic number, because the mean of its divisors is an integer number (4650345).

Almost surely, 2^397304544 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 397304544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (669649680).

397304544 is an abundant number, since it is smaller than the sum of its proper divisors (941994816).

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

397304544 is a wasteful number, since it uses less digits than its factorization.

397304544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202 (or 187 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 39.

The square root of 397304544 is about 19932.4996927129. The cubic root of 397304544 is about 735.1475440761.

The spelling of 397304544 in words is "three hundred ninety-seven million, three hundred four thousand, five hundred forty-four".