27868979 has 8 divisors (see below), whose sum is σ = 28600320. Its totient is φ = 27143496.

The previous prime is 27868963. The next prime is 27868987. The reversal of 27868979 is 97986872.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 27868979 - 2⁴ = 27868963 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27868949) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9152 + ... + 11810.

It is an arithmetic number, because the mean of its divisors is an integer number (3575040).

Almost surely, 2^27868979 is an apocalyptic number.

27868979 is a deficient number, since it is larger than the sum of its proper divisors (731341).

27868979 is a wasteful number, since it uses less digits than its factorization.

27868979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2929.

The product of its digits is 3048192, while the sum is 56.

The square root of 27868979 is about 5279.1077844651. The cubic root of 27868979 is about 303.1845172962.

The spelling of 27868979 in words is "twenty-seven million, eight hundred sixty-eight thousand, nine hundred seventy-nine".