27479896739 has 2 divisors, whose sum is σ = 27479896740. Its totient is φ = 27479896738.

The previous prime is 27479896733. The next prime is 27479896747. The reversal of 27479896739 is 93769897472.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27479896739 is a prime.

It is a super-2 number, since 2×27479896739² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (27479896733) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13739948369 + 13739948370.

It is an arithmetic number, because the mean of its divisors is an integer number (13739948370).

Almost surely, 2^27479896739 is an apocalyptic number.

27479896739 is a deficient number, since it is larger than the sum of its proper divisors (1).

27479896739 is an equidigital number, since it uses as much as digits as its factorization.

27479896739 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 288054144, while the sum is 71.

The spelling of 27479896739 in words is "twenty-seven billion, four hundred seventy-nine million, eight hundred ninety-six thousand, seven hundred thirty-nine".