27847916939 has 4 divisors (see below), whose sum is σ = 27979897800. Its totient is φ = 27715936080.

The previous prime is 27847916933. The next prime is 27847917067. The reversal of 27847916939 is 93961974872.

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 27847916939 - 2⁴ = 27847916923 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27847916933) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65990114 + ... + 65990535.

It is an arithmetic number, because the mean of its divisors is an integer number (6994974450).

Almost surely, 2^27847916939 is an apocalyptic number.

27847916939 is a deficient number, since it is larger than the sum of its proper divisors (131980861).

27847916939 is a wasteful number, since it uses less digits than its factorization.

27847916939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131980860.

The product of its digits is 41150592, while the sum is 65.

The spelling of 27847916939 in words is "twenty-seven billion, eight hundred forty-seven million, nine hundred sixteen thousand, nine hundred thirty-nine".