99923911 has 2 divisors, whose sum is σ = 99923912. Its totient is φ = 99923910.

The previous prime is 99923899. The next prime is 99923951. The reversal of 99923911 is 11932999.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 99923911 - 2¹³ = 99915719 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99923951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49961955 + 49961956.

It is an arithmetic number, because the mean of its divisors is an integer number (49961956).

Almost surely, 2^99923911 is an apocalyptic number.

99923911 is a deficient number, since it is larger than the sum of its proper divisors (1).

99923911 is an equidigital number, since it uses as much as digits as its factorization.

99923911 is an evil number, because the sum of its binary digits is even.

The product of its digits is 39366, while the sum is 43.

The square root of 99923911 is about 9996.1948260326. The cubic root of 99923911 is about 464.0411288726.

The spelling of 99923911 in words is "ninety-nine million, nine hundred twenty-three thousand, nine hundred eleven".