99899659 has 2 divisors, whose sum is σ = 99899660. Its totient is φ = 99899658.

The previous prime is 99899651. The next prime is 99899671. The reversal of 99899659 is 95699899.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 99899659 - 2³ = 99899651 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 99899659.

It is not a weakly prime, because it can be changed into another prime (99899651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49949829 + 49949830.

It is an arithmetic number, because the mean of its divisors is an integer number (49949830).

Almost surely, 2^99899659 is an apocalyptic number.

99899659 is a deficient number, since it is larger than the sum of its proper divisors (1).

99899659 is an equidigital number, since it uses as much as digits as its factorization.

99899659 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14171760, while the sum is 64.

The square root of 99899659 is about 9994.9816908287. The cubic root of 99899659 is about 464.0035841851.

The spelling of 99899659 in words is "ninety-nine million, eight hundred ninety-nine thousand, six hundred fifty-nine".