44638689 has 8 divisors (see below), whose sum is σ = 59600512. Its totient is φ = 29718000.

The previous prime is 44638679. The next prime is 44638723. The reversal of 44638689 is 98683644.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 44638689 - 2⁹ = 44638177 is a prime.

It is a super-2 number, since 2×44638689² = 3985225111277442, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (44638639) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 7654 + ... + 12159.

It is an arithmetic number, because the mean of its divisors is an integer number (7450064).

Almost surely, 2^44638689 is an apocalyptic number.

It is an amenable number.

44638689 is a deficient number, since it is larger than the sum of its proper divisors (14961823).

44638689 is a wasteful number, since it uses less digits than its factorization.

44638689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20567.

The product of its digits is 995328, while the sum is 48.

The square root of 44638689 is about 6681.2191252795. The cubic root of 44638689 is about 354.7348122012.

The spelling of 44638689 in words is "forty-four million, six hundred thirty-eight thousand, six hundred eighty-nine".