397280673 has 32 divisors (see below), whose sum is σ = 599364480. Its totient is φ = 260029440.

The previous prime is 397280563. The next prime is 397280677. The reversal of 397280673 is 376082793.

It is a happy number.

It is not a de Polignac number, because 397280673 - 2⁸ = 397280417 is a prime.

It is not an unprimeable number, because it can be changed into a prime (397280677) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 695478 + ... + 696048.

It is an arithmetic number, because the mean of its divisors is an integer number (18730140).

Almost surely, 2^397280673 is an apocalyptic number.

It is an amenable number.

397280673 is a deficient number, since it is larger than the sum of its proper divisors (202083807).

397280673 is a wasteful number, since it uses less digits than its factorization.

397280673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1006 (or 1000 counting only the distinct ones).

The product of its (nonzero) digits is 381024, while the sum is 45.

The square root of 397280673 is about 19931.9008877728. The cubic root of 397280673 is about 735.1328206448.

The spelling of 397280673 in words is "three hundred ninety-seven million, two hundred eighty thousand, six hundred seventy-three".