27797923 has 2 divisors, whose sum is σ = 27797924. Its totient is φ = 27797922.

The previous prime is 27797881. The next prime is 27797947. The reversal of 27797923 is 32979772.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 27797923 - 2⁹ = 27797411 is a prime.

It is a super-2 number, since 2×27797923² = 1545449046227858, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (27797953) 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, 13898961 + 13898962.

It is an arithmetic number, because the mean of its divisors is an integer number (13898962).

Almost surely, 2^27797923 is an apocalyptic number.

27797923 is a deficient number, since it is larger than the sum of its proper divisors (1).

27797923 is an equidigital number, since it uses as much as digits as its factorization.

27797923 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 333396, while the sum is 46.

The square root of 27797923 is about 5272.3735641550. The cubic root of 27797923 is about 302.9266270435.

The spelling of 27797923 in words is "twenty-seven million, seven hundred ninety-seven thousand, nine hundred twenty-three".