27279289 has 2 divisors, whose sum is σ = 27279290. Its totient is φ = 27279288.

The previous prime is 27279281. The next prime is 27279319. The reversal of 27279289 is 98297272.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27123264 + 156025 = 5208^2 + 395^2 .

It is a cyclic number.

It is not a de Polignac number, because 27279289 - 2³ = 27279281 is a prime.

It is not a weakly prime, because it can be changed into another prime (27279281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13639644 + 13639645.

It is an arithmetic number, because the mean of its divisors is an integer number (13639645).

Almost surely, 2^27279289 is an apocalyptic number.

It is an amenable number.

27279289 is a deficient number, since it is larger than the sum of its proper divisors (1).

27279289 is an equidigital number, since it uses as much as digits as its factorization.

27279289 is an evil number, because the sum of its binary digits is even.

The product of its digits is 254016, while the sum is 46.

The square root of 27279289 is about 5222.9578784440. The cubic root of 27279289 is about 301.0308574230.

The spelling of 27279289 in words is "twenty-seven million, two hundred seventy-nine thousand, two hundred eighty-nine".