44997287439 has 16 divisors (see below), whose sum is σ = 64703699424. Its totient is φ = 27651120000.

The previous prime is 44997287399. The next prime is 44997287441. The reversal of 44997287439 is 93478279944.

It is not a de Polignac number, because 44997287439 - 2²¹ = 44995190287 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 44997287439.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44997287449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 795612 + ... + 850289.

It is an arithmetic number, because the mean of its divisors is an integer number (4043981214).

Almost surely, 2^44997287439 is an apocalyptic number.

44997287439 is a deficient number, since it is larger than the sum of its proper divisors (19706411985).

44997287439 is a wasteful number, since it uses less digits than its factorization.

44997287439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1646618.

The product of its digits is 109734912, while the sum is 66.

The spelling of 44997287439 in words is "forty-four billion, nine hundred ninety-seven million, two hundred eighty-seven thousand, four hundred thirty-nine".