44917391889 has 16 divisors (see below), whose sum is σ = 66552307200. Its totient is φ = 29941317648.

The previous prime is 44917391879. The next prime is 44917391923. The reversal of 44917391889 is 98819371944.

44917391889 is a `hidden beast` number, since 449 + 1 + 7 + 3 + 9 + 188 + 9 = 666.

It is not a de Polignac number, because 44917391889 - 2⁹ = 44917391377 is a prime.

It is a super-2 number, since 2×44917391889² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (44917391879) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 138112 + ... + 330014.

It is an arithmetic number, because the mean of its divisors is an integer number (4159519200).

Almost surely, 2^44917391889 is an apocalyptic number.

It is an amenable number.

44917391889 is a deficient number, since it is larger than the sum of its proper divisors (21634915311).

44917391889 is a wasteful number, since it uses less digits than its factorization.

44917391889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200581 (or 200575 counting only the distinct ones).

The product of its digits is 15676416, while the sum is 63.

The spelling of 44917391889 in words is "forty-four billion, nine hundred seventeen million, three hundred ninety-one thousand, eight hundred eighty-nine".