99998799 has 4 divisors (see below), whose sum is σ = 133331736. Its totient is φ = 66665864.

The previous prime is 99998797. The next prime is 99998819. The reversal of 99998799 is 99789999.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 99998799 - 2¹ = 99998797 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99998797) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16666464 + ... + 16666469.

It is an arithmetic number, because the mean of its divisors is an integer number (33332934).

Almost surely, 2^99998799 is an apocalyptic number.

99998799 is a deficient number, since it is larger than the sum of its proper divisors (33332937).

99998799 is a wasteful number, since it uses less digits than its factorization.

99998799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33332936.

The product of its digits is 29760696, while the sum is 69.

The square root of 99998799 is about 9999.9399498197. The cubic root of 99998799 is about 464.1570251711.

The spelling of 99998799 in words is "ninety-nine million, nine hundred ninety-eight thousand, seven hundred ninety-nine".