396437636 has 18 divisors (see below), whose sum is σ = 807034158. Its totient is φ = 169901760.

The previous prime is 396437551. The next prime is 396437653. The reversal of 396437636 is 636734693.

It can be written as a sum of positive squares in only one way, i.e., 395214400 + 1223236 = 19880^2 + 1106^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1011125 + ... + 1011516.

It is an arithmetic number, because the mean of its divisors is an integer number (44835231).

Almost surely, 2^396437636 is an apocalyptic number.

It is an amenable number.

396437636 is an abundant number, since it is smaller than the sum of its proper divisors (410596522).

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

396437636 is a wasteful number, since it uses less digits than its factorization.

396437636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2022659 (or 2022650 counting only the distinct ones).

The product of its digits is 1469664, while the sum is 47.

The square root of 396437636 is about 19910.7417240042. The cubic root of 396437636 is about 734.6124638820.

The spelling of 396437636 in words is "three hundred ninety-six million, four hundred thirty-seven thousand, six hundred thirty-six".