44139387 has 8 divisors (see below), whose sum is σ = 58887504. Its totient is φ = 29408768.

The previous prime is 44139383. The next prime is 44139419. The reversal of 44139387 is 78393144.

44139387 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 44139387 - 2² = 44139383 is a prime.

It is not an unprimeable number, because it can be changed into a prime (44139383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3583 + ... + 10055.

It is an arithmetic number, because the mean of its divisors is an integer number (7360938).

Almost surely, 2^44139387 is an apocalyptic number.

44139387 is a deficient number, since it is larger than the sum of its proper divisors (14748117).

44139387 is a wasteful number, since it uses less digits than its factorization.

44139387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8749.

The product of its digits is 72576, while the sum is 39.

The square root of 44139387 is about 6643.7479633111. The cubic root of 44139387 is about 353.4072319820.

The spelling of 44139387 in words is "forty-four million, one hundred thirty-nine thousand, three hundred eighty-seven".