99900893 has 2 divisors, whose sum is σ = 99900894. Its totient is φ = 99900892.

The previous prime is 99900883. The next prime is 99900923. The reversal of 99900893 is 39800999.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 54715609 + 45185284 = 7397^2 + 6722^2 .

It is a cyclic number.

It is not a de Polignac number, because 99900893 - 2⁴ = 99900877 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99900863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49950446 + 49950447.

It is an arithmetic number, because the mean of its divisors is an integer number (49950447).

Almost surely, 2^99900893 is an apocalyptic number.

It is an amenable number.

99900893 is a deficient number, since it is larger than the sum of its proper divisors (1).

99900893 is an equidigital number, since it uses as much as digits as its factorization.

99900893 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 157464, while the sum is 47.

The square root of 99900893 is about 9995.0434216165. The cubic root of 99900893 is about 464.0054946956.

The spelling of 99900893 in words is "ninety-nine million, nine hundred thousand, eight hundred ninety-three".