9959699 has 2 divisors, whose sum is σ = 9959700. Its totient is φ = 9959698.

The previous prime is 9959689. The next prime is 9959749. The reversal of 9959699 is 9969599.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 9959699 - 2⁴ = 9959683 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (9959639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4979849 + 4979850.

It is an arithmetic number, because the mean of its divisors is an integer number (4979850).

Almost surely, 2^9959699 is an apocalyptic number.

9959699 is a deficient number, since it is larger than the sum of its proper divisors (1).

9959699 is an equidigital number, since it uses as much as digits as its factorization.

9959699 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1771470, while the sum is 56.

The square root of 9959699 is about 3155.8990795018. The cubic root of 9959699 is about 215.1536597589.

The spelling of 9959699 in words is "nine million, nine hundred fifty-nine thousand, six hundred ninety-nine".