44120000009 has 2 divisors, whose sum is σ = 44120000010. Its totient is φ = 44120000008.

The previous prime is 44119999999. The next prime is 44120000063. The reversal of 44120000009 is 90000002144.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 43812769225 + 307230784 = 209315^2 + 17528^2 .

It is a cyclic number.

It is not a de Polignac number, because 44120000009 - 2¹⁶ = 44119934473 is a prime.

It is not a weakly prime, because it can be changed into another prime (44120000609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22060000004 + 22060000005.

It is an arithmetic number, because the mean of its divisors is an integer number (22060000005).

Almost surely, 2^44120000009 is an apocalyptic number.

It is an amenable number.

44120000009 is a deficient number, since it is larger than the sum of its proper divisors (1).

44120000009 is an equidigital number, since it uses as much as digits as its factorization.

44120000009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 20.

The spelling of 44120000009 in words is "forty-four billion, one hundred twenty million, nine", and thus it is an aban number.