27239939 has 4 divisors (see below), whose sum is σ = 28673640. Its totient is φ = 25806240.

The previous prime is 27239923. The next prime is 27239987. The reversal of 27239939 is 93993272.

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 27239939 - 2⁴ = 27239923 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 27239939.

It is not an unprimeable number, because it can be changed into a prime (27239239) 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, 716822 + ... + 716859.

It is an arithmetic number, because the mean of its divisors is an integer number (7168410).

Almost surely, 2^27239939 is an apocalyptic number.

27239939 is a deficient number, since it is larger than the sum of its proper divisors (1433701).

27239939 is a wasteful number, since it uses less digits than its factorization.

27239939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1433700.

The product of its digits is 183708, while the sum is 44.

The square root of 27239939 is about 5219.1894964640. The cubic root of 27239939 is about 300.8860434765.

The spelling of 27239939 in words is "twenty-seven million, two hundred thirty-nine thousand, nine hundred thirty-nine".