44889809 has 4 divisors (see below), whose sum is σ = 47530404. Its totient is φ = 42249216.

The previous prime is 44889791. The next prime is 44889811. The reversal of 44889809 is 90898844.

It is a happy number.

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 33814225 + 11075584 = 5815^2 + 3328^2 .

It is a de Polignac number, because none of the positive numbers 2^k-44889809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (44889869) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1320272 + ... + 1320305.

It is an arithmetic number, because the mean of its divisors is an integer number (11882601).

Almost surely, 2^44889809 is an apocalyptic number.

It is an amenable number.

44889809 is a deficient number, since it is larger than the sum of its proper divisors (2640595).

44889809 is a wasteful number, since it uses less digits than its factorization.

44889809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2640594.

The product of its (nonzero) digits is 663552, while the sum is 50.

The square root of 44889809 is about 6699.9857462535. The cubic root of 44889809 is about 355.3987689845.

The spelling of 44889809 in words is "forty-four million, eight hundred eighty-nine thousand, eight hundred nine".