44398889915 has 4 divisors (see below), whose sum is σ = 53278667904. Its totient is φ = 35519111928.

The previous prime is 44398889893. The next prime is 44398889917. The reversal of 44398889915 is 51998889344.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-44398889915 is a prime.

It is a super-2 number, since 2×44398889915² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (44398889917) 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, 4439888987 + ... + 4439888996.

It is an arithmetic number, because the mean of its divisors is an integer number (13319666976).

Almost surely, 2^44398889915 is an apocalyptic number.

44398889915 is a deficient number, since it is larger than the sum of its proper divisors (8879777989).

44398889915 is an equidigital number, since it uses as much as digits as its factorization.

44398889915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8879777988.

The product of its digits is 89579520, while the sum is 68.

The spelling of 44398889915 in words is "forty-four billion, three hundred ninety-eight million, eight hundred eighty-nine thousand, nine hundred fifteen".