44888989 has 2 divisors, whose sum is σ = 44888990. Its totient is φ = 44888988.

The previous prime is 44888971. The next prime is 44888999. The reversal of 44888989 is 98988844.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30713764 + 14175225 = 5542^2 + 3765^2 .

It is a cyclic number.

It is not a de Polignac number, because 44888989 - 2⁵ = 44888957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (44888929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22444494 + 22444495.

It is an arithmetic number, because the mean of its divisors is an integer number (22444495).

Almost surely, 2^44888989 is an apocalyptic number.

It is an amenable number.

44888989 is a deficient number, since it is larger than the sum of its proper divisors (1).

44888989 is an equidigital number, since it uses as much as digits as its factorization.

44888989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5308416, while the sum is 58.

The square root of 44888989 is about 6699.9245518140. The cubic root of 44888989 is about 355.3966049538.

The spelling of 44888989 in words is "forty-four million, eight hundred eighty-eight thousand, nine hundred eighty-nine".