99993923 has 2 divisors, whose sum is σ = 99993924. Its totient is φ = 99993922.

The previous prime is 99993917. The next prime is 99993947. The reversal of 99993923 is 32939999.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99993923 is a prime.

It is not a weakly prime, because it can be changed into another prime (99995923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49996961 + 49996962.

It is an arithmetic number, because the mean of its divisors is an integer number (49996962).

Almost surely, 2^99993923 is an apocalyptic number.

99993923 is a deficient number, since it is larger than the sum of its proper divisors (1).

99993923 is an equidigital number, since it uses as much as digits as its factorization.

99993923 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1062882, while the sum is 53.

The square root of 99993923 is about 9999.6961453836. The cubic root of 99993923 is about 464.1494808590.

The spelling of 99993923 in words is "ninety-nine million, nine hundred ninety-three thousand, nine hundred twenty-three".