397696752 has 120 divisors (see below), whose sum is σ = 1181241360. Its totient is φ = 124554240.

The previous prime is 397696729. The next prime is 397696753. The reversal of 397696752 is 257696793.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (397696753) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 374302 + ... + 375362.

It is an arithmetic number, because the mean of its divisors is an integer number (9843678).

Almost surely, 2^397696752 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 397696752, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (590620680).

397696752 is an abundant number, since it is smaller than the sum of its proper divisors (783544608).

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

397696752 is a wasteful number, since it uses less digits than its factorization.

397696752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1231 (or 1222 counting only the distinct ones).

The product of its digits is 4286520, while the sum is 54.

The square root of 397696752 is about 19942.3356706280. The cubic root of 397696752 is about 735.3893702579.

The spelling of 397696752 in words is "three hundred ninety-seven million, six hundred ninety-six thousand, seven hundred fifty-two".