44449640749 has 4 divisors (see below), whose sum is σ = 45883500160. Its totient is φ = 43015781340.

The previous prime is 44449640723. The next prime is 44449640761. The reversal of 44449640749 is 94704694444.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 44449640749 - 2⁹ = 44449640237 is a prime.

It is a super-2 number, since 2×44449640749² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 44449640749.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44449640149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 716929659 + ... + 716929720.

It is an arithmetic number, because the mean of its divisors is an integer number (11470875040).

Almost surely, 2^44449640749 is an apocalyptic number.

It is an amenable number.

44449640749 is a deficient number, since it is larger than the sum of its proper divisors (1433859411).

44449640749 is a wasteful number, since it uses less digits than its factorization.

44449640749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1433859410.

The product of its (nonzero) digits is 13934592, while the sum is 55.

The spelling of 44449640749 in words is "forty-four billion, four hundred forty-nine million, six hundred forty thousand, seven hundred forty-nine".