397603569 has 16 divisors (see below), whose sum is σ = 584063424. Its totient is φ = 238584000.

The previous prime is 397603567. The next prime is 397603573. The reversal of 397603569 is 965306793.

It is a happy number.

It is not a de Polignac number, because 397603569 - 2¹ = 397603567 is a prime.

It is a super-2 number, since 2×397603569² = 316177196163075522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (397603561) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56314 + ... + 62979.

It is an arithmetic number, because the mean of its divisors is an integer number (36503964).

Almost surely, 2^397603569 is an apocalyptic number.

It is an amenable number.

397603569 is a deficient number, since it is larger than the sum of its proper divisors (186459855).

397603569 is a wasteful number, since it uses less digits than its factorization.

397603569 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119408.

The product of its (nonzero) digits is 918540, while the sum is 48.

The square root of 397603569 is about 19939.9992226680. Note that the first 3 decimals coincide. The cubic root of 397603569 is about 735.3319302276.

The spelling of 397603569 in words is "three hundred ninety-seven million, six hundred three thousand, five hundred sixty-nine".