397358966 has 4 divisors (see below), whose sum is σ = 596038452. Its totient is φ = 198679482.

The previous prime is 397358959. The next prime is 397358981. The reversal of 397358966 is 669853793.

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, 99339740 + ... + 99339743.

It is an arithmetic number, because the mean of its divisors is an integer number (149009613).

Almost surely, 2^397358966 is an apocalyptic number.

397358966 is a deficient number, since it is larger than the sum of its proper divisors (198679486).

397358966 is a wasteful number, since it uses less digits than its factorization.

397358966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198679485.

The product of its digits is 7348320, while the sum is 56.

The square root of 397358966 is about 19933.8648033942. The cubic root of 397358966 is about 735.1811089016.

The spelling of 397358966 in words is "three hundred ninety-seven million, three hundred fifty-eight thousand, nine hundred sixty-six".