27139223 has 2 divisors, whose sum is σ = 27139224. Its totient is φ = 27139222.

The previous prime is 27139219. The next prime is 27139243. The reversal of 27139223 is 32293172.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 27139223 - 2² = 27139219 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27139243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13569611 + 13569612.

It is an arithmetic number, because the mean of its divisors is an integer number (13569612).

Almost surely, 2^27139223 is an apocalyptic number.

27139223 is a deficient number, since it is larger than the sum of its proper divisors (1).

27139223 is an equidigital number, since it uses as much as digits as its factorization.

27139223 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4536, while the sum is 29.

The square root of 27139223 is about 5209.5319367483. The cubic root of 27139223 is about 300.5147569864.

The spelling of 27139223 in words is "twenty-seven million, one hundred thirty-nine thousand, two hundred twenty-three".