44004513 has 32 divisors (see below), whose sum is σ = 73036800. Its totient is φ = 22994496.

The previous prime is 44004511. The next prime is 44004529. The reversal of 44004513 is 31540044.

It is not a de Polignac number, because 44004513 - 2¹ = 44004511 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 44004513.

It is not an unprimeable number, because it can be changed into a prime (44004511) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9670 + ... + 13472.

It is an arithmetic number, because the mean of its divisors is an integer number (2282400).

Almost surely, 2^44004513 is an apocalyptic number.

It is an amenable number.

44004513 is a deficient number, since it is larger than the sum of its proper divisors (29032287).

44004513 is a wasteful number, since it uses less digits than its factorization.

44004513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3861.

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 44004513 is about 6633.5897521629. The cubic root of 44004513 is about 353.0469031670.

Adding to 44004513 its reverse (31540044), we get a palindrome (75544557).

The spelling of 44004513 in words is "forty-four million, four thousand, five hundred thirteen".