27693979 has 2 divisors, whose sum is σ = 27693980. Its totient is φ = 27693978.

The previous prime is 27693973. The next prime is 27694031. The reversal of 27693979 is 97939672.

It is an a-pointer prime, because the next prime (27694031) can be obtained adding 27693979 to its sum of digits (52).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 27693979 - 2³ = 27693971 is a prime.

It is not a weakly prime, because it can be changed into another prime (27693971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13846989 + 13846990.

It is an arithmetic number, because the mean of its divisors is an integer number (13846990).

Almost surely, 2^27693979 is an apocalyptic number.

27693979 is a deficient number, since it is larger than the sum of its proper divisors (1).

27693979 is an equidigital number, since it uses as much as digits as its factorization.

27693979 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1285956, while the sum is 52.

The square root of 27693979 is about 5262.5069121095. The cubic root of 27693979 is about 302.5485804089.

The spelling of 27693979 in words is "twenty-seven million, six hundred ninety-three thousand, nine hundred seventy-nine".