27890959 has 2 divisors, whose sum is σ = 27890960. Its totient is φ = 27890958.

The previous prime is 27890923. The next prime is 27890981. The reversal of 27890959 is 95909872.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 27890959 - 2¹⁵ = 27858191 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27890059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13945479 + 13945480.

It is an arithmetic number, because the mean of its divisors is an integer number (13945480).

Almost surely, 2^27890959 is an apocalyptic number.

27890959 is a deficient number, since it is larger than the sum of its proper divisors (1).

27890959 is an equidigital number, since it uses as much as digits as its factorization.

27890959 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 408240, while the sum is 49.

The square root of 27890959 is about 5281.1891653301. The cubic root of 27890959 is about 303.2642026040.

The spelling of 27890959 in words is "twenty-seven million, eight hundred ninety thousand, nine hundred fifty-nine".