9986992739 has 2 divisors, whose sum is σ = 9986992740. Its totient is φ = 9986992738.

The previous prime is 9986992727. The next prime is 9986992777. The reversal of 9986992739 is 9372996899.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 9986992739 - 2²⁴ = 9970215523 is a prime.

It is not a weakly prime, because it can be changed into another prime (9986992789) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4993496369 + 4993496370.

It is an arithmetic number, because the mean of its divisors is an integer number (4993496370).

Almost surely, 2^9986992739 is an apocalyptic number.

9986992739 is a deficient number, since it is larger than the sum of its proper divisors (1).

9986992739 is an equidigital number, since it uses as much as digits as its factorization.

9986992739 is an evil number, because the sum of its binary digits is even.

The product of its digits is 119042784, while the sum is 71.

The square root of 9986992739 is about 99934.9425326297. The cubic root of 9986992739 is about 2153.5001749213.

The spelling of 9986992739 in words is "nine billion, nine hundred eighty-six million, nine hundred ninety-two thousand, seven hundred thirty-nine".