397948416 has 60 divisors (see below), whose sum is σ = 1062246372. Its totient is φ = 132388864.

The previous prime is 397948403. The next prime is 397948487. The reversal of 397948416 is 614849793.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 781570 + ... + 782078.

Almost surely, 2^397948416 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 397948416, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (531123186).

397948416 is an abundant number, since it is smaller than the sum of its proper divisors (664297956).

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

397948416 is an frugal number, since it uses more digits than its factorization.

397948416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1039 (or 514 counting only the distinct ones).

The product of its digits is 1306368, while the sum is 51.

The square root of 397948416 is about 19948.6444652262. The cubic root of 397948416 is about 735.5444566023.

The spelling of 397948416 in words is "three hundred ninety-seven million, nine hundred forty-eight thousand, four hundred sixteen".