44406139 has 2 divisors, whose sum is σ = 44406140. Its totient is φ = 44406138.

The previous prime is 44406133. The next prime is 44406151. The reversal of 44406139 is 93160444.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 44406139 - 2¹¹ = 44404091 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 44406139.

It is not a weakly prime, because it can be changed into another prime (44406133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22203069 + 22203070.

It is an arithmetic number, because the mean of its divisors is an integer number (22203070).

Almost surely, 2^44406139 is an apocalyptic number.

44406139 is a deficient number, since it is larger than the sum of its proper divisors (1).

44406139 is an equidigital number, since it uses as much as digits as its factorization.

44406139 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 44406139 is about 6663.7931390463. The cubic root of 44406139 is about 354.1177297890.

The spelling of 44406139 in words is "forty-four million, four hundred six thousand, one hundred thirty-nine".