44639988 has 12 divisors (see below), whose sum is σ = 104160000. Its totient is φ = 14879992.

The previous prime is 44639971. The next prime is 44639993. The reversal of 44639988 is 88993644.

It is a happy number.

44639988 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 44639988.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 1859988 + ... + 1860011.

It is an arithmetic number, because the mean of its divisors is an integer number (8680000).

Almost surely, 2^44639988 is an apocalyptic number.

It is an amenable number.

44639988 is an abundant number, since it is smaller than the sum of its proper divisors (59520012).

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

44639988 is a wasteful number, since it uses less digits than its factorization.

44639988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3720006 (or 3720004 counting only the distinct ones).

The product of its digits is 1492992, while the sum is 51.

The square root of 44639988 is about 6681.3163373695. The cubic root of 44639988 is about 354.7382531330.

The spelling of 44639988 in words is "forty-four million, six hundred thirty-nine thousand, nine hundred eighty-eight".