27529139 has 4 divisors (see below), whose sum is σ = 30031800. Its totient is φ = 25026480.

The previous prime is 27529133. The next prime is 27529181. The reversal of 27529139 is 93192572.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27529139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27529133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1251314 + ... + 1251335.

It is an arithmetic number, because the mean of its divisors is an integer number (7507950).

Almost surely, 2^27529139 is an apocalyptic number.

27529139 is a deficient number, since it is larger than the sum of its proper divisors (2502661).

27529139 is a wasteful number, since it uses less digits than its factorization.

27529139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2502660.

The product of its digits is 34020, while the sum is 38.

The square root of 27529139 is about 5246.8217999090. The cubic root of 27529139 is about 301.9471092850.

The spelling of 27529139 in words is "twenty-seven million, five hundred twenty-nine thousand, one hundred thirty-nine".