44538689 has 4 divisors (see below), whose sum is σ = 47964756. Its totient is φ = 41112624.

The previous prime is 44538647. The next prime is 44538707. The reversal of 44538689 is 98683544.

44538689 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 18447025 + 26091664 = 4295^2 + 5108^2 .

It is a cyclic number.

It is not a de Polignac number, because 44538689 - 2⁸ = 44538433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (44538619) 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 3 ways as a sum of consecutive naturals, for example, 1713014 + ... + 1713039.

It is an arithmetic number, because the mean of its divisors is an integer number (11991189).

Almost surely, 2^44538689 is an apocalyptic number.

It is an amenable number.

44538689 is a deficient number, since it is larger than the sum of its proper divisors (3426067).

44538689 is a wasteful number, since it uses less digits than its factorization.

44538689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3426066.

The product of its digits is 829440, while the sum is 47.

The square root of 44538689 is about 6673.7312651919. The cubic root of 44538689 is about 354.4697207572.

The spelling of 44538689 in words is "forty-four million, five hundred thirty-eight thousand, six hundred eighty-nine".