27964399 has 2 divisors, whose sum is σ = 27964400. Its totient is φ = 27964398.

The previous prime is 27964379. The next prime is 27964403. The reversal of 27964399 is 99346972.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 27964399 - 2⁷ = 27964271 is a prime.

It is a super-2 number, since 2×27964399² = 1564015222862402, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27964379) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13982199 + 13982200.

It is an arithmetic number, because the mean of its divisors is an integer number (13982200).

Almost surely, 2^27964399 is an apocalyptic number.

27964399 is a deficient number, since it is larger than the sum of its proper divisors (1).

27964399 is an equidigital number, since it uses as much as digits as its factorization.

27964399 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 734832, while the sum is 49.

The square root of 27964399 is about 5288.1375738534. The cubic root of 27964399 is about 303.5301454568.

The spelling of 27964399 in words is "twenty-seven million, nine hundred sixty-four thousand, three hundred ninety-nine".