14987909 has 2 divisors, whose sum is σ = 14987910. Its totient is φ = 14987908.

The previous prime is 14987893. The next prime is 14987933. The reversal of 14987909 is 90978941.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9333025 + 5654884 = 3055^2 + 2378^2 .

It is a cyclic number.

It is not a de Polignac number, because 14987909 - 2⁴ = 14987893 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (14987969) 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, 7493954 + 7493955.

It is an arithmetic number, because the mean of its divisors is an integer number (7493955).

Almost surely, 2^14987909 is an apocalyptic number.

It is an amenable number.

14987909 is a deficient number, since it is larger than the sum of its proper divisors (1).

14987909 is an equidigital number, since it uses as much as digits as its factorization.

14987909 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 163296, while the sum is 47.

The square root of 14987909 is about 3871.4220901369. The cubic root of 14987909 is about 246.5549252424.

The spelling of 14987909 in words is "fourteen million, nine hundred eighty-seven thousand, nine hundred nine".