9699839971 has 2 divisors, whose sum is σ = 9699839972. Its totient is φ = 9699839970.

The previous prime is 9699839951. The next prime is 9699840013. The reversal of 9699839971 is 1799389969.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 9699839971 - 2¹⁵ = 9699807203 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 9699839971.

It is not a weakly prime, because it can be changed into another prime (9699839911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4849919985 + 4849919986.

It is an arithmetic number, because the mean of its divisors is an integer number (4849919986).

Almost surely, 2^9699839971 is an apocalyptic number.

9699839971 is a deficient number, since it is larger than the sum of its proper divisors (1).

9699839971 is an equidigital number, since it uses as much as digits as its factorization.

9699839971 is an evil number, because the sum of its binary digits is even.

The product of its digits is 59521392, while the sum is 70.

The square root of 9699839971 is about 98487.7655904529. The cubic root of 9699839971 is about 2132.6595072886.

The spelling of 9699839971 in words is "nine billion, six hundred ninety-nine million, eight hundred thirty-nine thousand, nine hundred seventy-one".