13444514989 has 2 divisors, whose sum is σ = 13444514990. Its totient is φ = 13444514988.

The previous prime is 13444514983. The next prime is 13444515089. The reversal of 13444514989 is 98941544431.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13402692900 + 41822089 = 115770^2 + 6467^2 .

It is a cyclic number.

It is not a de Polignac number, because 13444514989 - 2⁷ = 13444514861 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13444514983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6722257494 + 6722257495.

It is an arithmetic number, because the mean of its divisors is an integer number (6722257495).

Almost surely, 2^13444514989 is an apocalyptic number.

It is an amenable number.

13444514989 is a deficient number, since it is larger than the sum of its proper divisors (1).

13444514989 is an equidigital number, since it uses as much as digits as its factorization.

13444514989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2488320, while the sum is 52.

The spelling of 13444514989 in words is "thirteen billion, four hundred forty-four million, five hundred fourteen thousand, nine hundred eighty-nine".