27799091 has 2 divisors, whose sum is σ = 27799092. Its totient is φ = 27799090.

The previous prime is 27799021. The next prime is 27799129. The reversal of 27799091 is 19099772.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 27799091 - 2²² = 23604787 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (27799001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13899545 + 13899546.

It is an arithmetic number, because the mean of its divisors is an integer number (13899546).

Almost surely, 2^27799091 is an apocalyptic number.

27799091 is a deficient number, since it is larger than the sum of its proper divisors (1).

27799091 is an equidigital number, since it uses as much as digits as its factorization.

27799091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 71442, while the sum is 44.

The square root of 27799091 is about 5272.4843290426. The cubic root of 27799091 is about 302.9308697267.

The spelling of 27799091 in words is "twenty-seven million, seven hundred ninety-nine thousand, ninety-one".