44622639 has 12 divisors (see below), whose sum is σ = 64589616. Its totient is φ = 29686272.

The previous prime is 44622607. The next prime is 44622647. The reversal of 44622639 is 93622644.

It is not a de Polignac number, because 44622639 - 2⁵ = 44622607 is a prime.

It is a super-4 number, since 4×44622639⁴ (a number of 32 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44622649) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 402 + ... + 9455.

It is an arithmetic number, because the mean of its divisors is an integer number (5382468).

Almost surely, 2^44622639 is an apocalyptic number.

44622639 is a deficient number, since it is larger than the sum of its proper divisors (19966977).

44622639 is a wasteful number, since it uses less digits than its factorization.

44622639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10366 (or 10363 counting only the distinct ones).

The product of its digits is 62208, while the sum is 36.

The square root of 44622639 is about 6680.0178891976. The cubic root of 44622639 is about 354.6922917153.

The spelling of 44622639 in words is "forty-four million, six hundred twenty-two thousand, six hundred thirty-nine".