397227212 has 6 divisors (see below), whose sum is σ = 695147628. Its totient is φ = 198613604.

The previous prime is 397227137. The next prime is 397227223. The reversal of 397227212 is 212722793.

It is a super-3 number, since 3×397227212³ (a number of 27 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49653398 + ... + 49653405.

It is an arithmetic number, because the mean of its divisors is an integer number (115857938).

Almost surely, 2^397227212 is an apocalyptic number.

It is an amenable number.

397227212 is a deficient number, since it is larger than the sum of its proper divisors (297920416).

397227212 is a wasteful number, since it uses less digits than its factorization.

397227212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99306807 (or 99306805 counting only the distinct ones).

The product of its digits is 21168, while the sum is 35.

The square root of 397227212 is about 19930.5597512965. The cubic root of 397227212 is about 735.0998442116.

The spelling of 397227212 in words is "three hundred ninety-seven million, two hundred twenty-seven thousand, two hundred twelve".