44139688 has 8 divisors (see below), whose sum is σ = 82761930. Its totient is φ = 22069840.

The previous prime is 44139677. The next prime is 44139703. The reversal of 44139688 is 88693144.

It can be written as a sum of positive squares in only one way, i.e., 31337604 + 12802084 = 5598^2 + 3578^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2758723 + ... + 2758738.

Almost surely, 2^44139688 is an apocalyptic number.

It is an amenable number.

44139688 is a deficient number, since it is larger than the sum of its proper divisors (38622242).

44139688 is a wasteful number, since it uses less digits than its factorization.

44139688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5517467 (or 5517463 counting only the distinct ones).

The product of its digits is 165888, while the sum is 43.

The square root of 44139688 is about 6643.7706161486. The cubic root of 44139688 is about 353.4080353109.

The spelling of 44139688 in words is "forty-four million, one hundred thirty-nine thousand, six hundred eighty-eight".