396649360 has 40 divisors (see below), whose sum is σ = 924478776. Its totient is φ = 158269440.

The previous prime is 396649349. The next prime is 396649391. The reversal of 396649360 is 63946693.

It can be written as a sum of positive squares in 4 ways, for example, as 1752976 + 394896384 = 1324^2 + 19872^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 396649360.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27792 + ... + 39568.

Almost surely, 2^396649360 is an apocalyptic number.

It is an amenable number.

396649360 is an abundant number, since it is smaller than the sum of its proper divisors (527829416).

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

396649360 is a wasteful number, since it uses less digits than its factorization.

396649360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12211 (or 12205 counting only the distinct ones).

The product of its (nonzero) digits is 629856, while the sum is 46.

The square root of 396649360 is about 19916.0578428564. The cubic root of 396649360 is about 734.7432178726.

The spelling of 396649360 in words is "three hundred ninety-six million, six hundred forty-nine thousand, three hundred sixty".