27139977 has 12 divisors (see below), whose sum is σ = 40906944. Its totient is φ = 17306520.

The previous prime is 27139967. The next prime is 27139993. The reversal of 27139977 is 77993172.

It is not a de Polignac number, because 27139977 - 2²⁴ = 10362761 is a prime.

It is not an unprimeable number, because it can be changed into a prime (27139967) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 65349 + ... + 65762.

It is an arithmetic number, because the mean of its divisors is an integer number (3408912).

Almost surely, 2^27139977 is an apocalyptic number.

It is an amenable number.

27139977 is a deficient number, since it is larger than the sum of its proper divisors (13766967).

27139977 is a wasteful number, since it uses less digits than its factorization.

27139977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131140 (or 131137 counting only the distinct ones).

The product of its digits is 166698, while the sum is 45.

The square root of 27139977 is about 5209.6043035916. The cubic root of 27139977 is about 300.5175399944.

The spelling of 27139977 in words is "twenty-seven million, one hundred thirty-nine thousand, nine hundred seventy-seven".