397021092 has 96 divisors (see below), whose sum is σ = 1049932800. Its totient is φ = 115914240.

The previous prime is 397021087. The next prime is 397021109. The reversal of 397021092 is 290120793.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 255534 + ... + 257082.

It is an arithmetic number, because the mean of its divisors is an integer number (10936800).

Almost surely, 2^397021092 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 397021092, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (524966400).

397021092 is an abundant number, since it is smaller than the sum of its proper divisors (652911708).

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

397021092 is a wasteful number, since it uses less digits than its factorization.

397021092 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1653 (or 1651 counting only the distinct ones).

The product of its (nonzero) digits is 6804, while the sum is 33.

The square root of 397021092 is about 19925.3881267091. The cubic root of 397021092 is about 734.9726751839.

The spelling of 397021092 in words is "three hundred ninety-seven million, twenty-one thousand, ninety-two".