9909431339 has 2 divisors, whose sum is σ = 9909431340. Its totient is φ = 9909431338.

The previous prime is 9909431321. The next prime is 9909431351. The reversal of 9909431339 is 9331349099.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 9909431339 - 2¹² = 9909427243 is a prime.

It is not a weakly prime, because it can be changed into another prime (9909431369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4954715669 + 4954715670.

It is an arithmetic number, because the mean of its divisors is an integer number (4954715670).

Almost surely, 2^9909431339 is an apocalyptic number.

9909431339 is a deficient number, since it is larger than the sum of its proper divisors (1).

9909431339 is an equidigital number, since it uses as much as digits as its factorization.

9909431339 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 708588, while the sum is 50.

The square root of 9909431339 is about 99546.1266900928. The cubic root of 9909431339 is about 2147.9108127479.

The spelling of 9909431339 in words is "nine billion, nine hundred nine million, four hundred thirty-one thousand, three hundred thirty-nine".