44664139 has 16 divisors (see below), whose sum is σ = 49344064. Its totient is φ = 40176000.

The previous prime is 44664131. The next prime is 44664163. The reversal of 44664139 is 93146644.

It is a cyclic number.

It is not a de Polignac number, because 44664139 - 2³ = 44664131 is a prime.

It is a super-2 number, since 2×44664139² = 3989770625222642, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 44664098 and 44664107.

It is not an unprimeable number, because it can be changed into a prime (44664131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 119557 + ... + 119929.

It is an arithmetic number, because the mean of its divisors is an integer number (3084004).

Almost surely, 2^44664139 is an apocalyptic number.

44664139 is a deficient number, since it is larger than the sum of its proper divisors (4679925).

44664139 is a wasteful number, since it uses less digits than its factorization.

44664139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 598.

The product of its digits is 62208, while the sum is 37.

The square root of 44664139 is about 6683.1234464134. The cubic root of 44664139 is about 354.8022147616.

The spelling of 44664139 in words is "forty-four million, six hundred sixty-four thousand, one hundred thirty-nine".