14939809 has 2 divisors, whose sum is σ = 14939810. Its totient is φ = 14939808.

The previous prime is 14939779. The next prime is 14939839. The reversal of 14939809 is 90893941.

It is a balanced prime because it is at equal distance from previous prime (14939779) and next prime (14939839).

It can be written as a sum of positive squares in only one way, i.e., 14653584 + 286225 = 3828^2 + 535^2 .

It is a cyclic number.

It is not a de Polignac number, because 14939809 - 2¹⁹ = 14415521 is a prime.

It is not a weakly prime, because it can be changed into another prime (14939839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7469904 + 7469905.

It is an arithmetic number, because the mean of its divisors is an integer number (7469905).

Almost surely, 2^14939809 is an apocalyptic number.

It is an amenable number.

14939809 is a deficient number, since it is larger than the sum of its proper divisors (1).

14939809 is an equidigital number, since it uses as much as digits as its factorization.

14939809 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 69984, while the sum is 43.

The square root of 14939809 is about 3865.2049104802. The cubic root of 14939809 is about 246.2908901666.

The spelling of 14939809 in words is "fourteen million, nine hundred thirty-nine thousand, eight hundred nine".