27984792139 has 8 divisors (see below), whose sum is σ = 29352830112. Its totient is φ = 26629363200.

The previous prime is 27984792137. The next prime is 27984792169. The reversal of 27984792139 is 93129748972.

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

It is not a de Polignac number, because 27984792139 - 2¹ = 27984792137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27984792137) 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, 3147712 + ... + 3156589.

It is an arithmetic number, because the mean of its divisors is an integer number (3669103764).

Almost surely, 2^27984792139 is an apocalyptic number.

27984792139 is a deficient number, since it is larger than the sum of its proper divisors (1368037973).

27984792139 is a wasteful number, since it uses less digits than its factorization.

27984792139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6304517.

The product of its digits is 13716864, while the sum is 61.

The spelling of 27984792139 in words is "twenty-seven billion, nine hundred eighty-four million, seven hundred ninety-two thousand, one hundred thirty-nine".