27307139 has 2 divisors, whose sum is σ = 27307140. Its totient is φ = 27307138.

The previous prime is 27307039. The next prime is 27307153. The reversal of 27307139 is 93170372.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 27307139 - 2¹² = 27303043 is a prime.

It is not a weakly prime, because it can be changed into another prime (27307039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13653569 + 13653570.

It is an arithmetic number, because the mean of its divisors is an integer number (13653570).

Almost surely, 2^27307139 is an apocalyptic number.

27307139 is a deficient number, since it is larger than the sum of its proper divisors (1).

27307139 is an equidigital number, since it uses as much as digits as its factorization.

27307139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7938, while the sum is 32.

The square root of 27307139 is about 5225.6233121035. The cubic root of 27307139 is about 301.1332654924.

The spelling of 27307139 in words is "twenty-seven million, three hundred seven thousand, one hundred thirty-nine".