397455576 has 96 divisors (see below), whose sum is σ = 1151861760. Its totient is φ = 111951936.

The previous prime is 397455521. The next prime is 397455587. The reversal of 397455576 is 675554793.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1782201 + ... + 1782423.

It is an arithmetic number, because the mean of its divisors is an integer number (11998560).

Almost surely, 2^397455576 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 397455576, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (575930880).

397455576 is an abundant number, since it is smaller than the sum of its proper divisors (754406184).

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

397455576 is a wasteful number, since it uses less digits than its factorization.

397455576 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 445 (or 338 counting only the distinct ones).

The product of its digits is 3969000, while the sum is 51.

The square root of 397455576 is about 19936.2879192692. The cubic root of 397455576 is about 735.2406856719.

The spelling of 397455576 in words is "three hundred ninety-seven million, four hundred fifty-five thousand, five hundred seventy-six".