397856484 has 36 divisors (see below), whose sum is σ = 1049420736. Its totient is φ = 126852528.

The previous prime is 397856477. The next prime is 397856509. The reversal of 397856484 is 484658793.

397856484 is a `hidden beast` number, since 3 + 9 + 78 + 564 + 8 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a self number, because there is not a number n which added to its sum of digits gives 397856484.

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, 239424 + ... + 241079.

It is an arithmetic number, because the mean of its divisors is an integer number (29150576).

Almost surely, 2^397856484 is an apocalyptic number.

It is an amenable number.

397856484 is an abundant number, since it is smaller than the sum of its proper divisors (651564252).

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

397856484 is a wasteful number, since it uses less digits than its factorization.

397856484 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 480536 (or 480531 counting only the distinct ones).

The product of its digits is 5806080, while the sum is 54.

The square root of 397856484 is about 19946.3401154197. The cubic root of 397856484 is about 735.4878116721.

The spelling of 397856484 in words is "three hundred ninety-seven million, eight hundred fifty-six thousand, four hundred eighty-four".