27923149 has 2 divisors, whose sum is σ = 27923150. Its totient is φ = 27923148.

The previous prime is 27923131. The next prime is 27923171. The reversal of 27923149 is 94132972.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26193924 + 1729225 = 5118^2 + 1315^2 .

It is a cyclic number.

It is not a de Polignac number, because 27923149 - 2⁵ = 27923117 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27927149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13961574 + 13961575.

It is an arithmetic number, because the mean of its divisors is an integer number (13961575).

Almost surely, 2^27923149 is an apocalyptic number.

It is an amenable number.

27923149 is a deficient number, since it is larger than the sum of its proper divisors (1).

27923149 is an equidigital number, since it uses as much as digits as its factorization.

27923149 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27216, while the sum is 37.

The square root of 27923149 is about 5284.2358955671. The cubic root of 27923149 is about 303.3808272720.

The spelling of 27923149 in words is "twenty-seven million, nine hundred twenty-three thousand, one hundred forty-nine".