27982392879 has 8 divisors (see below), whose sum is σ = 42639836800. Its totient is φ = 15989938776.

The previous prime is 27982392863. The next prime is 27982392983. The reversal of 27982392879 is 97829328972.

It is a happy number.

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

It is not a de Polignac number, because 27982392879 - 2⁴ = 27982392863 is a prime.

It is a super-2 number, since 2×27982392879² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27982392859) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 666247429 + ... + 666247470.

It is an arithmetic number, because the mean of its divisors is an integer number (5329979600).

Almost surely, 2^27982392879 is an apocalyptic number.

27982392879 is a deficient number, since it is larger than the sum of its proper divisors (14657443921).

27982392879 is a wasteful number, since it uses less digits than its factorization.

27982392879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1332494909.

The product of its digits is 54867456, while the sum is 66.

The spelling of 27982392879 in words is "twenty-seven billion, nine hundred eighty-two million, three hundred ninety-two thousand, eight hundred seventy-nine".