27290139 has 4 divisors (see below), whose sum is σ = 36386856. Its totient is φ = 18193424.

The previous prime is 27290093. The next prime is 27290183. The reversal of 27290139 is 93109272.

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 27290139 - 2¹⁵ = 27257371 is a prime.

It is not an unprimeable number, because it can be changed into a prime (27290339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4548354 + ... + 4548359.

It is an arithmetic number, because the mean of its divisors is an integer number (9096714).

Almost surely, 2^27290139 is an apocalyptic number.

27290139 is a deficient number, since it is larger than the sum of its proper divisors (9096717).

27290139 is an equidigital number, since it uses as much as digits as its factorization.

27290139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9096716.

The product of its (nonzero) digits is 6804, while the sum is 33.

The square root of 27290139 is about 5223.9964586512. The cubic root of 27290139 is about 301.0707625671.

The spelling of 27290139 in words is "twenty-seven million, two hundred ninety thousand, one hundred thirty-nine".