9996477839 has 2 divisors, whose sum is σ = 9996477840. Its totient is φ = 9996477838.

The previous prime is 9996477791. The next prime is 9996477851. The reversal of 9996477839 is 9387746999.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 9996477839 - 2⁸ = 9996477583 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9996477739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4998238919 + 4998238920.

It is an arithmetic number, because the mean of its divisors is an integer number (4998238920).

Almost surely, 2^9996477839 is an apocalyptic number.

9996477839 is a deficient number, since it is larger than the sum of its proper divisors (1).

9996477839 is an equidigital number, since it uses as much as digits as its factorization.

9996477839 is an evil number, because the sum of its binary digits is even.

The product of its digits is 185177664, while the sum is 71.

The square root of 9996477839 is about 99982.3876440246. The cubic root of 9996477839 is about 2154.1817181346.

The spelling of 9996477839 in words is "nine billion, nine hundred ninety-six million, four hundred seventy-seven thousand, eight hundred thirty-nine".