13299989 has 2 divisors, whose sum is σ = 13299990.
Its totient is φ = 13299988.
The previous prime is 13299973. The next prime is 13299991. The reversal of 13299989 is 98999231.
13299989 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is a strong prime.
It can be written as a sum of positive squares in only one way, i.e., 6838225 + 6461764 = 2615^2 + 2542^2
It is an emirp because it is prime and its reverse (98999231) is a distict prime.
It is a cyclic number.
It is not a de Polignac number, because 13299989 - 24 = 13299973 is a prime.
Together with 13299991, it forms a pair of twin primes.
It is a Chen prime.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (13299959) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6649994 + 6649995.
It is an arithmetic number, because the mean of its divisors is an integer number (6649995).
Almost surely, 213299989 is an apocalyptic number.
It is an amenable number.
13299989 is a deficient number, since it is larger than the sum of its proper divisors (1).
13299989 is an equidigital number, since it uses as much as digits as its factorization.
13299989 is an evil number, because the sum of its binary digits is even.
The product of its digits is 314928, while the sum is 50.
The square root of 13299989 is about 3646.9149976384.
The cubic root of 13299989 is about 236.9283848970.
The spelling of 13299989 in words is "thirteen million, two hundred ninety-nine thousand, nine hundred eighty-nine".