396548840 has 16 divisors (see below), whose sum is σ = 892234980. Its totient is φ = 158619520.

The previous prime is 396548827. The next prime is 396548857. The reversal of 396548840 is 48845693.

It can be written as a sum of positive squares in 2 ways, for example, as 393387556 + 3161284 = 19834^2 + 1778^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4956821 + ... + 4956900.

Almost surely, 2^396548840 is an apocalyptic number.

It is an amenable number.

396548840 is an abundant number, since it is smaller than the sum of its proper divisors (495686140).

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

396548840 is a wasteful number, since it uses less digits than its factorization.

396548840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9913732 (or 9913728 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 47.

The square root of 396548840 is about 19913.5340911652. The cubic root of 396548840 is about 734.6811457290.

The spelling of 396548840 in words is "three hundred ninety-six million, five hundred forty-eight thousand, eight hundred forty".