14918989 has 2 divisors, whose sum is σ = 14918990. Its totient is φ = 14918988.

The previous prime is 14918987. The next prime is 14918993. The reversal of 14918989 is 98981941.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11526025 + 3392964 = 3395^2 + 1842^2 .

It is a cyclic number.

It is not a de Polignac number, because 14918989 - 2¹ = 14918987 is a prime.

Together with 14918987, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (14918983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7459494 + 7459495.

It is an arithmetic number, because the mean of its divisors is an integer number (7459495).

Almost surely, 2^14918989 is an apocalyptic number.

It is an amenable number.

14918989 is a deficient number, since it is larger than the sum of its proper divisors (1).

14918989 is an equidigital number, since it uses as much as digits as its factorization.

14918989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 186624, while the sum is 49.

The square root of 14918989 is about 3862.5107119593. The cubic root of 14918989 is about 246.1764272979.

The spelling of 14918989 in words is "fourteen million, nine hundred eighteen thousand, nine hundred eighty-nine".