44818909 has 2 divisors, whose sum is σ = 44818910. Its totient is φ = 44818908.

The previous prime is 44818903. The next prime is 44818931. The reversal of 44818909 is 90981844.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 39413284 + 5405625 = 6278^2 + 2325^2 .

It is a cyclic number.

It is not a de Polignac number, because 44818909 - 2¹⁵ = 44786141 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (44818903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22409454 + 22409455.

It is an arithmetic number, because the mean of its divisors is an integer number (22409455).

Almost surely, 2^44818909 is an apocalyptic number.

It is an amenable number.

44818909 is a deficient number, since it is larger than the sum of its proper divisors (1).

44818909 is an equidigital number, since it uses as much as digits as its factorization.

44818909 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 82944, while the sum is 43.

The square root of 44818909 is about 6694.6925993656. The cubic root of 44818909 is about 355.2115620518.

The spelling of 44818909 in words is "forty-four million, eight hundred eighteen thousand, nine hundred nine".