14978539 has 2 divisors, whose sum is σ = 14978540. Its totient is φ = 14978538.

The previous prime is 14978533. The next prime is 14978563. The reversal of 14978539 is 93587941.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 14978539 - 2⁹ = 14978027 is a prime.

It is not a weakly prime, because it can be changed into another prime (14978533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7489269 + 7489270.

It is an arithmetic number, because the mean of its divisors is an integer number (7489270).

Almost surely, 2^14978539 is an apocalyptic number.

14978539 is a deficient number, since it is larger than the sum of its proper divisors (1).

14978539 is an equidigital number, since it uses as much as digits as its factorization.

14978539 is an evil number, because the sum of its binary digits is even.

The product of its digits is 272160, while the sum is 46.

The square root of 14978539 is about 3870.2117513128. The cubic root of 14978539 is about 246.5035349018.

The spelling of 14978539 in words is "fourteen million, nine hundred seventy-eight thousand, five hundred thirty-nine".