99929579 has 2 divisors, whose sum is σ = 99929580. Its totient is φ = 99929578.

The previous prime is 99929573. The next prime is 99929597. The reversal of 99929579 is 97592999.

Together with next prime (99929597) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99929579 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (99929573) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49964789 + 49964790.

It is an arithmetic number, because the mean of its divisors is an integer number (49964790).

Almost surely, 2^99929579 is an apocalyptic number.

99929579 is a deficient number, since it is larger than the sum of its proper divisors (1).

99929579 is an equidigital number, since it uses as much as digits as its factorization.

99929579 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4133430, while the sum is 59.

The square root of 99929579 is about 9996.4783298920. The cubic root of 99929579 is about 464.0499026664.

The spelling of 99929579 in words is "ninety-nine million, nine hundred twenty-nine thousand, five hundred seventy-nine".