9974664839 has 2 divisors, whose sum is σ = 9974664840. Its totient is φ = 9974664838.

The previous prime is 9974664797. The next prime is 9974664841. The reversal of 9974664839 is 9384664799.

It is a happy number.

9974664839 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9974664839 is a prime.

Together with 9974664841, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9974661839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4987332419 + 4987332420.

It is an arithmetic number, because the mean of its divisors is an integer number (4987332420).

Almost surely, 2^9974664839 is an apocalyptic number.

9974664839 is a deficient number, since it is larger than the sum of its proper divisors (1).

9974664839 is an equidigital number, since it uses as much as digits as its factorization.

9974664839 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 70543872, while the sum is 65.

The square root of 9974664839 is about 99873.2438594041. The cubic root of 9974664839 is about 2152.6137196879.

The spelling of 9974664839 in words is "nine billion, nine hundred seventy-four million, six hundred sixty-four thousand, eight hundred thirty-nine".