13639079 has 2 divisors, whose sum is σ = 13639080. Its totient is φ = 13639078.

The previous prime is 13639063. The next prime is 13639091. The reversal of 13639079 is 97093631.

13639079 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is an emirp because it is prime and its reverse (97093631) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13639079 - 2⁴ = 13639063 is a prime.

It is a Sophie Germain 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 (13639009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6819539 + 6819540.

It is an arithmetic number, because the mean of its divisors is an integer number (6819540).

Almost surely, 2^13639079 is an apocalyptic number.

13639079 is a deficient number, since it is larger than the sum of its proper divisors (1).

13639079 is an equidigital number, since it uses as much as digits as its factorization.

13639079 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30618, while the sum is 38.

The square root of 13639079 is about 3693.1123730534. The cubic root of 13639079 is about 238.9250478367.

The spelling of 13639079 in words is "thirteen million, six hundred thirty-nine thousand, seventy-nine".