4007636444 has 12 divisors (see below), whose sum is σ = 8015272944. Its totient is φ = 1717558464.

The previous prime is 4007636359. The next prime is 4007636473. The reversal of 4007636444 is 4446367004.

4007636444 is an admirable number.

It is a super-2 number, since 2×4007636444² = 32122299734553930272, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 4007636398 and 4007636407.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71564909 + ... + 71564964.

It is an arithmetic number, because the mean of its divisors is an integer number (667939412).

Almost surely, 2^4007636444 is an apocalyptic number.

It is an amenable number.

4007636444 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

4007636444 is a wasteful number, since it uses less digits than its factorization.

4007636444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143129884 (or 143129882 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 38.

The square root of 4007636444 is about 63305.8958075786. The cubic root of 4007636444 is about 1588.4105847404.

The spelling of 4007636444 in words is "four billion, seven million, six hundred thirty-six thousand, four hundred forty-four".