397097648 has 20 divisors (see below), whose sum is σ = 770108448. Its totient is φ = 198360000.

The previous prime is 397097641. The next prime is 397097681. The reversal of 397097648 is 846790793.

It is a self number, because there is not a number n which added to its sum of digits gives 397097648.

It is not an unprimeable number, because it can be changed into a prime (397097641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6398 + ... + 28898.

Almost surely, 2^397097648 is an apocalyptic number.

It is an amenable number.

397097648 is a deficient number, since it is larger than the sum of its proper divisors (373010800).

397097648 is a wasteful number, since it uses less digits than its factorization.

397097648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23612 (or 23606 counting only the distinct ones).

The product of its (nonzero) digits is 2286144, while the sum is 53.

The square root of 397097648 is about 19927.3091008294. The cubic root of 397097648 is about 735.0199127682.

The spelling of 397097648 in words is "three hundred ninety-seven million, ninety-seven thousand, six hundred forty-eight".