99923635439 has 2 divisors, whose sum is σ = 99923635440. Its totient is φ = 99923635438.

The previous prime is 99923635423. The next prime is 99923635457. The reversal of 99923635439 is 93453632999.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 99923635439 - 2⁴ = 99923635423 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99923635039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49961817719 + 49961817720.

It is an arithmetic number, because the mean of its divisors is an integer number (49961817720).

Almost surely, 2^99923635439 is an apocalyptic number.

99923635439 is a deficient number, since it is larger than the sum of its proper divisors (1).

99923635439 is an equidigital number, since it uses as much as digits as its factorization.

99923635439 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 42515280, while the sum is 62.

The spelling of 99923635439 in words is "ninety-nine billion, nine hundred twenty-three million, six hundred thirty-five thousand, four hundred thirty-nine".