14939989 has 2 divisors, whose sum is σ = 14939990. Its totient is φ = 14939988.

The previous prime is 14939983. The next prime is 14939993. The reversal of 14939989 is 98993941.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14938225 + 1764 = 3865^2 + 42^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-14939989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (14939983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7469994 + 7469995.

It is an arithmetic number, because the mean of its divisors is an integer number (7469995).

Almost surely, 2^14939989 is an apocalyptic number.

It is an amenable number.

14939989 is a deficient number, since it is larger than the sum of its proper divisors (1).

14939989 is an equidigital number, since it uses as much as digits as its factorization.

14939989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 629856, while the sum is 52.

The square root of 14939989 is about 3865.2281950746. The cubic root of 14939989 is about 246.2918792954.

The spelling of 14939989 in words is "fourteen million, nine hundred thirty-nine thousand, nine hundred eighty-nine".