397934592 has 160 divisors (see below), whose sum is σ = 1207958400. Its totient is φ = 115343360.

The previous prime is 397934591. The next prime is 397934597. The reversal of 397934592 is 295439793.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (397934591) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17301493 + ... + 17301515.

It is an arithmetic number, because the mean of its divisors is an integer number (7549740).

Almost surely, 2^397934592 is an apocalyptic number.

397934592 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 397934592, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (603979200).

397934592 is an abundant number, since it is smaller than the sum of its proper divisors (810023808).

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

397934592 is an frugal number, since it uses more digits than its factorization.

397934592 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75 (or 39 counting only the distinct ones).

The product of its digits is 1837080, while the sum is 51.

The square root of 397934592 is about 19948.2979725088. The cubic root of 397934592 is about 735.5359393473.

The spelling of 397934592 in words is "three hundred ninety-seven million, nine hundred thirty-four thousand, five hundred ninety-two".