13989289 has 2 divisors, whose sum is σ = 13989290. Its totient is φ = 13989288.

The previous prime is 13989271. The next prime is 13989337. The reversal of 13989289 is 98298931.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12816400 + 1172889 = 3580^2 + 1083^2 .

It is an emirp because it is prime and its reverse (98298931) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13989289 - 2⁵ = 13989257 is a prime.

It is not a weakly prime, because it can be changed into another prime (13989229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6994644 + 6994645.

It is an arithmetic number, because the mean of its divisors is an integer number (6994645).

Almost surely, 2^13989289 is an apocalyptic number.

It is an amenable number.

13989289 is a deficient number, since it is larger than the sum of its proper divisors (1).

13989289 is an equidigital number, since it uses as much as digits as its factorization.

13989289 is an evil number, because the sum of its binary digits is even.

The product of its digits is 279936, while the sum is 49.

The square root of 13989289 is about 3740.2257953231. The cubic root of 13989289 is about 240.9527463698.

The spelling of 13989289 in words is "thirteen million, nine hundred eighty-nine thousand, two hundred eighty-nine".