397485644 has 6 divisors (see below), whose sum is σ = 695599884. Its totient is φ = 198742820.

The previous prime is 397485617. The next prime is 397485667. The reversal of 397485644 is 446584793.

It is a junction number, because it is equal to n+sod(n) for n = 397485592 and 397485601.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49685702 + ... + 49685709.

It is an arithmetic number, because the mean of its divisors is an integer number (115933314).

Almost surely, 2^397485644 is an apocalyptic number.

It is an amenable number.

397485644 is a deficient number, since it is larger than the sum of its proper divisors (298114240).

397485644 is a wasteful number, since it uses less digits than its factorization.

397485644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99371415 (or 99371413 counting only the distinct ones).

The product of its digits is 2903040, while the sum is 50.

The square root of 397485644 is about 19937.0420072788. The cubic root of 397485644 is about 735.2592258231.

The spelling of 397485644 in words is "three hundred ninety-seven million, four hundred eighty-five thousand, six hundred forty-four".