27279799 has 2 divisors, whose sum is σ = 27279800. Its totient is φ = 27279798.

The previous prime is 27279751. The next prime is 27279803. The reversal of 27279799 is 99797272.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 27279799 - 2⁷ = 27279671 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27279739) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13639899 + 13639900.

It is an arithmetic number, because the mean of its divisors is an integer number (13639900).

Almost surely, 2^27279799 is an apocalyptic number.

27279799 is a deficient number, since it is larger than the sum of its proper divisors (1).

27279799 is an equidigital number, since it uses as much as digits as its factorization.

27279799 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1000188, while the sum is 52.

The square root of 27279799 is about 5223.0067011253. The cubic root of 27279799 is about 301.0327333857.

The spelling of 27279799 in words is "twenty-seven million, two hundred seventy-nine thousand, seven hundred ninety-nine".