13268989 has 2 divisors, whose sum is σ = 13268990. Its totient is φ = 13268988.

The previous prime is 13268971. The next prime is 13269001. The reversal of 13268989 is 98986231.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11492100 + 1776889 = 3390^2 + 1333^2 .

It is a cyclic number.

It is not a de Polignac number, because 13268989 - 2¹⁹ = 12744701 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13238989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6634494 + 6634495.

It is an arithmetic number, because the mean of its divisors is an integer number (6634495).

Almost surely, 2^13268989 is an apocalyptic number.

It is an amenable number.

13268989 is a deficient number, since it is larger than the sum of its proper divisors (1).

13268989 is an equidigital number, since it uses as much as digits as its factorization.

13268989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 186624, while the sum is 46.

The square root of 13268989 is about 3642.6623505343. The cubic root of 13268989 is about 236.7441618422.

The spelling of 13268989 in words is "thirteen million, two hundred sixty-eight thousand, nine hundred eighty-nine".