9699319979 has 2 divisors, whose sum is σ = 9699319980. Its totient is φ = 9699319978.

The previous prime is 9699319921. The next prime is 9699320003. The reversal of 9699319979 is 9799139969.

It is a strong prime.

It is an emirp because it is prime and its reverse (9799139969) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9699319979 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (9699319919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4849659989 + 4849659990.

It is an arithmetic number, because the mean of its divisors is an integer number (4849659990).

Almost surely, 2^9699319979 is an apocalyptic number.

9699319979 is a deficient number, since it is larger than the sum of its proper divisors (1).

9699319979 is an equidigital number, since it uses as much as digits as its factorization.

9699319979 is an evil number, because the sum of its binary digits is even.

The product of its digits is 66961566, while the sum is 71.

The square root of 9699319979 is about 98485.1256738803. The cubic root of 9699319979 is about 2132.6213971857.

The spelling of 9699319979 in words is "nine billion, six hundred ninety-nine million, three hundred nineteen thousand, nine hundred seventy-nine".