27379931 has 4 divisors (see below), whose sum is σ = 28821000. Its totient is φ = 25938864.

The previous prime is 27379921. The next prime is 27379951. The reversal of 27379931 is 13997372.

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 27379931 - 2¹⁸ = 27117787 is a prime.

It is a super-2 number, since 2×27379931² = 1499321243129522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27379901) 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, 720506 + ... + 720543.

It is an arithmetic number, because the mean of its divisors is an integer number (7205250).

Almost surely, 2^27379931 is an apocalyptic number.

27379931 is a deficient number, since it is larger than the sum of its proper divisors (1441069).

27379931 is a wasteful number, since it uses less digits than its factorization.

27379931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1441068.

The product of its digits is 71442, while the sum is 41.

The square root of 27379931 is about 5232.5835874833. The cubic root of 27379931 is about 301.4006027159.

The spelling of 27379931 in words is "twenty-seven million, three hundred seventy-nine thousand, nine hundred thirty-one".