27139963 has 4 divisors (see below), whose sum is σ = 27522288. Its totient is φ = 26757640.

The previous prime is 27139951. The next prime is 27139967. The reversal of 27139963 is 36993172.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 27139963 - 2⁹ = 27139451 is a prime.

It is a Duffinian number.

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

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 191056 + ... + 191197.

It is an arithmetic number, because the mean of its divisors is an integer number (6880572).

Almost surely, 2^27139963 is an apocalyptic number.

27139963 is a deficient number, since it is larger than the sum of its proper divisors (382325).

27139963 is an equidigital number, since it uses as much as digits as its factorization.

27139963 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 382324.

The product of its digits is 61236, while the sum is 40.

The square root of 27139963 is about 5209.6029599193. The cubic root of 27139963 is about 300.5174883210.

The spelling of 27139963 in words is "twenty-seven million, one hundred thirty-nine thousand, nine hundred sixty-three".