44412491639 has 2 divisors, whose sum is σ = 44412491640. Its totient is φ = 44412491638.

The previous prime is 44412491581. The next prime is 44412491701. The reversal of 44412491639 is 93619421444.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 44412491639 - 2¹² = 44412487543 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 44412491593 and 44412491602.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (44412421639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22206245819 + 22206245820.

It is an arithmetic number, because the mean of its divisors is an integer number (22206245820).

Almost surely, 2^44412491639 is an apocalyptic number.

44412491639 is a deficient number, since it is larger than the sum of its proper divisors (1).

44412491639 is an equidigital number, since it uses as much as digits as its factorization.

44412491639 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 746496, while the sum is 47.

The spelling of 44412491639 in words is "forty-four billion, four hundred twelve million, four hundred ninety-one thousand, six hundred thirty-nine".