397222854 has 32 divisors (see below), whose sum is σ = 955726080. Its totient is φ = 107518752.

The previous prime is 397222843. The next prime is 397222907. The reversal of 397222854 is 458222793.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 248089 + ... + 249684.

It is an arithmetic number, because the mean of its divisors is an integer number (29866440).

Almost surely, 2^397222854 is an apocalyptic number.

397222854 is an abundant number, since it is smaller than the sum of its proper divisors (558503226).

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

397222854 is a wasteful number, since it uses less digits than its factorization.

397222854 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 497804.

The product of its digits is 241920, while the sum is 42.

The square root of 397222854 is about 19930.4504214029. The cubic root of 397222854 is about 735.0971559292.

The spelling of 397222854 in words is "three hundred ninety-seven million, two hundred twenty-two thousand, eight hundred fifty-four".