397073966 has 4 divisors (see below), whose sum is σ = 595610952. Its totient is φ = 198536982.

The previous prime is 397073939. The next prime is 397074011. The reversal of 397073966 is 669370793.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99268490 + ... + 99268493.

It is an arithmetic number, because the mean of its divisors is an integer number (148902738).

Almost surely, 2^397073966 is an apocalyptic number.

397073966 is a deficient number, since it is larger than the sum of its proper divisors (198536986).

397073966 is a wasteful number, since it uses less digits than its factorization.

397073966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198536985.

The product of its (nonzero) digits is 1285956, while the sum is 50.

The square root of 397073966 is about 19926.7148822880. The cubic root of 397073966 is about 735.0053008395.

The spelling of 397073966 in words is "three hundred ninety-seven million, seventy-three thousand, nine hundred sixty-six".