44639 has 6 divisors (see below), whose sum is σ = 51984. Its totient is φ = 38220.

The previous prime is 44633. The next prime is 44641. The reversal of 44639 is 93644.

It is not a de Polignac number, because 44639 - 2⁴ = 44623 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44633) 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 5 ways as a sum of consecutive naturals, for example, 407 + ... + 504.

It is an arithmetic number, because the mean of its divisors is an integer number (8664).

2⁴⁴⁶³⁹ is an apocalyptic number.

44639 is a gapful number since it is divisible by the number (49) formed by its first and last digit.

44639 is a deficient number, since it is larger than the sum of its proper divisors (7345).

44639 is an equidigital number, since it uses as much as digits as its factorization.

44639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 925 (or 918 counting only the distinct ones).

The product of its digits is 2592, while the sum is 26.

The square root of 44639 is about 211.2794358190. The cubic root of 44639 is about 35.4735636018.

The spelling of 44639 in words is "forty-four thousand, six hundred thirty-nine".