27964379 has 2 divisors, whose sum is σ = 27964380. Its totient is φ = 27964378.

The previous prime is 27964373. The next prime is 27964399. The reversal of 27964379 is 97346972.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27964379 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (27964373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13982189 + 13982190.

It is an arithmetic number, because the mean of its divisors is an integer number (13982190).

Almost surely, 2^27964379 is an apocalyptic number.

27964379 is a deficient number, since it is larger than the sum of its proper divisors (1).

27964379 is an equidigital number, since it uses as much as digits as its factorization.

27964379 is an evil number, because the sum of its binary digits is even.

The product of its digits is 571536, while the sum is 47.

The square root of 27964379 is about 5288.1356828281. The cubic root of 27964379 is about 303.5300730957.

The spelling of 27964379 in words is "twenty-seven million, nine hundred sixty-four thousand, three hundred seventy-nine".