9999974099 has 2 divisors, whose sum is σ = 9999974100. Its totient is φ = 9999974098.

The previous prime is 9999974077. The next prime is 9999974111. The reversal of 9999974099 is 9904799999.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 9999974099 - 2⁸ = 9999973843 is a prime.

It is not a weakly prime, because it can be changed into another prime (9999974069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4999987049 + 4999987050.

It is an arithmetic number, because the mean of its divisors is an integer number (4999987050).

Almost surely, 2^9999974099 is an apocalyptic number.

9999974099 is a deficient number, since it is larger than the sum of its proper divisors (1).

9999974099 is an equidigital number, since it uses as much as digits as its factorization.

9999974099 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 133923132, while the sum is 74.

The square root of 9999974099 is about 99999.8704949161. The cubic root of 9999974099 is about 2154.4328299632.

The spelling of 9999974099 in words is "nine billion, nine hundred ninety-nine million, nine hundred seventy-four thousand, ninety-nine".