397722294 has 24 divisors (see below), whose sum is σ = 862099992. Its totient is φ = 132517440.

The previous prime is 397722289. The next prime is 397722313. The reversal of 397722294 is 492227793.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 74329 + ... + 79499.

It is an arithmetic number, because the mean of its divisors is an integer number (35920833).

Almost surely, 2^397722294 is an apocalyptic number.

397722294 is an abundant number, since it is smaller than the sum of its proper divisors (464377698).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

397722294 is a wasteful number, since it uses less digits than its factorization.

397722294 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9452 (or 9449 counting only the distinct ones).

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

The square root of 397722294 is about 19942.9760567474. The cubic root of 397722294 is about 735.4051133361.

The spelling of 397722294 in words is "three hundred ninety-seven million, seven hundred twenty-two thousand, two hundred ninety-four".