99800023 has 2 divisors, whose sum is σ = 99800024. Its totient is φ = 99800022.

The previous prime is 99800011. The next prime is 99800069. The reversal of 99800023 is 32000899.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 99800023 - 2²⁵ = 66245591 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99810023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49900011 + 49900012.

It is an arithmetic number, because the mean of its divisors is an integer number (49900012).

Almost surely, 2^99800023 is an apocalyptic number.

99800023 is a deficient number, since it is larger than the sum of its proper divisors (1).

99800023 is an equidigital number, since it uses as much as digits as its factorization.

99800023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 99800023 is about 9989.9961461454. The cubic root of 99800023 is about 463.8492732164.

The spelling of 99800023 in words is "ninety-nine million, eight hundred thousand, twenty-three".