44390139 has 4 divisors (see below), whose sum is σ = 59186856. Its totient is φ = 29593424.

The previous prime is 44390107. The next prime is 44390149. The reversal of 44390139 is 93109344.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 44390139 - 2⁵ = 44390107 is a prime.

It is not an unprimeable number, because it can be changed into a prime (44390149) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7398354 + ... + 7398359.

It is an arithmetic number, because the mean of its divisors is an integer number (14796714).

Almost surely, 2^44390139 is an apocalyptic number.

44390139 is a deficient number, since it is larger than the sum of its proper divisors (14796717).

44390139 is a wasteful number, since it uses less digits than its factorization.

44390139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14796716.

The product of its (nonzero) digits is 11664, while the sum is 33.

The square root of 44390139 is about 6662.5925134290. The cubic root of 44390139 is about 354.0751938962.

The spelling of 44390139 in words is "forty-four million, three hundred ninety thousand, one hundred thirty-nine".