99900923 has 2 divisors, whose sum is σ = 99900924. Its totient is φ = 99900922.

The previous prime is 99900893. The next prime is 99900929. The reversal of 99900923 is 32900999.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 99900923 - 2¹² = 99896827 is a prime.

It is not a weakly prime, because it can be changed into another prime (99900929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49950461 + 49950462.

It is an arithmetic number, because the mean of its divisors is an integer number (49950462).

Almost surely, 2^99900923 is an apocalyptic number.

99900923 is a deficient number, since it is larger than the sum of its proper divisors (1).

99900923 is an equidigital number, since it uses as much as digits as its factorization.

99900923 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 39366, while the sum is 41.

The square root of 99900923 is about 9995.0449223603. The cubic root of 99900923 is about 464.0055411422.

The spelling of 99900923 in words is "ninety-nine million, nine hundred thousand, nine hundred twenty-three".