44207139 has 8 divisors (see below), whose sum is σ = 60313792. Its totient is φ = 28785960.

The previous prime is 44207131. The next prime is 44207153. The reversal of 44207139 is 93170244.

It is a happy number.

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

It is not a de Polignac number, because 44207139 - 2³ = 44207131 is a prime.

It is a super-2 number, since 2×44207139² = 3908542277130642, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (44207131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 171217 + ... + 171474.

It is an arithmetic number, because the mean of its divisors is an integer number (7539224).

Almost surely, 2^44207139 is an apocalyptic number.

44207139 is a deficient number, since it is larger than the sum of its proper divisors (16106653).

44207139 is a wasteful number, since it uses less digits than its factorization.

44207139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 342737.

The product of its (nonzero) digits is 6048, while the sum is 30.

The square root of 44207139 is about 6648.8449372805. The cubic root of 44207139 is about 353.5879610151.

The spelling of 44207139 in words is "forty-four million, two hundred seven thousand, one hundred thirty-nine".