14987969 has 2 divisors, whose sum is σ = 14987970. Its totient is φ = 14987968.

The previous prime is 14987933. The next prime is 14987977. The reversal of 14987969 is 96978941.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9535744 + 5452225 = 3088^2 + 2335^2 .

It is an emirp because it is prime and its reverse (96978941) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-14987969 is a prime.

It is a super-2 number, since 2×14987969² = 449278429489922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 14987969.

It is not a weakly prime, because it can be changed into another prime (14987909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7493984 + 7493985.

It is an arithmetic number, because the mean of its divisors is an integer number (7493985).

Almost surely, 2^14987969 is an apocalyptic number.

It is an amenable number.

14987969 is a deficient number, since it is larger than the sum of its proper divisors (1).

14987969 is an equidigital number, since it uses as much as digits as its factorization.

14987969 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 979776, while the sum is 53.

The square root of 14987969 is about 3871.4298392196. The cubic root of 14987969 is about 246.5552542470. Note that the first 3 decimals are identical.

The spelling of 14987969 in words is "fourteen million, nine hundred eighty-seven thousand, nine hundred sixty-nine".