44505409 has 8 divisors (see below), whose sum is σ = 48280680. Its totient is φ = 40780416.

The previous prime is 44505407. The next prime is 44505421. The reversal of 44505409 is 90450544.

It can be written as a sum of positive squares in 4 ways, for example, as 14288400 + 30217009 = 3780^2 + 5497^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 44505409 - 2¹ = 44505407 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (44505403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10714 + ... + 14275.

It is an arithmetic number, because the mean of its divisors is an integer number (6035085).

Almost surely, 2^44505409 is an apocalyptic number.

It is an amenable number.

44505409 is a deficient number, since it is larger than the sum of its proper divisors (3775271).

44505409 is a wasteful number, since it uses less digits than its factorization.

44505409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25139.

The product of its (nonzero) digits is 14400, while the sum is 31.

The square root of 44505409 is about 6671.2374414347. The cubic root of 44505409 is about 354.3814103315.

The spelling of 44505409 in words is "forty-four million, five hundred five thousand, four hundred nine".