27922387 has 2 divisors, whose sum is σ = 27922388. Its totient is φ = 27922386.

The previous prime is 27922379. The next prime is 27922393. The reversal of 27922387 is 78322972.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 27922387 - 2³ = 27922379 is a prime.

It is not a weakly prime, because it can be changed into another prime (27922357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13961193 + 13961194.

It is an arithmetic number, because the mean of its divisors is an integer number (13961194).

Almost surely, 2^27922387 is an apocalyptic number.

27922387 is a deficient number, since it is larger than the sum of its proper divisors (1).

27922387 is an equidigital number, since it uses as much as digits as its factorization.

27922387 is an evil number, because the sum of its binary digits is even.

The product of its digits is 84672, while the sum is 40.

The square root of 27922387 is about 5284.1637938277. The cubic root of 27922387 is about 303.3780675749.

The spelling of 27922387 in words is "twenty-seven million, nine hundred twenty-two thousand, three hundred eighty-seven".