44509689 has 48 divisors (see below), whose sum is σ = 81259200. Its totient is φ = 23925888.

The previous prime is 44509681. The next prime is 44509691. The reversal of 44509689 is 98690544.

It is a happy number.

It is not a de Polignac number, because 44509689 - 2³ = 44509681 is a prime.

It is a super-2 number, since 2×44509689² = 3962224829753442, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (44509681) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 21502 + ... + 23480.

It is an arithmetic number, because the mean of its divisors is an integer number (1692900).

Almost surely, 2^44509689 is an apocalyptic number.

44509689 is a gapful number since it is divisible by the number (49) formed by its first and last digit.

It is an amenable number.

44509689 is a deficient number, since it is larger than the sum of its proper divisors (36749511).

44509689 is a wasteful number, since it uses less digits than its factorization.

44509689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2019 (or 2006 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 45.

The square root of 44509689 is about 6671.5582137908. The cubic root of 44509689 is about 354.3927700280.

The spelling of 44509689 in words is "forty-four million, five hundred nine thousand, six hundred eighty-nine".