27974887 has 2 divisors, whose sum is σ = 27974888. Its totient is φ = 27974886.

The previous prime is 27974873. The next prime is 27974941. The reversal of 27974887 is 78847972.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 27974887 - 2⁷ = 27974759 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27974827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13987443 + 13987444.

It is an arithmetic number, because the mean of its divisors is an integer number (13987444).

Almost surely, 2^27974887 is an apocalyptic number.

27974887 is a deficient number, since it is larger than the sum of its proper divisors (1).

27974887 is an equidigital number, since it uses as much as digits as its factorization.

27974887 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1580544, while the sum is 52.

The square root of 27974887 is about 5289.1291343661. The cubic root of 27974887 is about 303.5680868678.

The spelling of 27974887 in words is "twenty-seven million, nine hundred seventy-four thousand, eight hundred eighty-seven".