27679913 has 2 divisors, whose sum is σ = 27679914. Its totient is φ = 27679912.

The previous prime is 27679901. The next prime is 27679943. The reversal of 27679913 is 31997672.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21187609 + 6492304 = 4603^2 + 2548^2 .

It is a cyclic number.

It is not a de Polignac number, because 27679913 - 2⁶ = 27679849 is a prime.

It is not a weakly prime, because it can be changed into another prime (27679943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13839956 + 13839957.

It is an arithmetic number, because the mean of its divisors is an integer number (13839957).

Almost surely, 2^27679913 is an apocalyptic number.

It is an amenable number.

27679913 is a deficient number, since it is larger than the sum of its proper divisors (1).

27679913 is an equidigital number, since it uses as much as digits as its factorization.

27679913 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 142884, while the sum is 44.

The square root of 27679913 is about 5261.1703070705. The cubic root of 27679913 is about 302.4973494292.

The spelling of 27679913 in words is "twenty-seven million, six hundred seventy-nine thousand, nine hundred thirteen".