99231929609 has 2 divisors, whose sum is σ = 99231929610. Its totient is φ = 99231929608.

The previous prime is 99231929579. The next prime is 99231929617. The reversal of 99231929609 is 90692913299.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 88999595584 + 10232334025 = 298328^2 + 101155^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99231929609 is a prime.

It is not a weakly prime, because it can be changed into another prime (99231929669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49615964804 + 49615964805.

It is an arithmetic number, because the mean of its divisors is an integer number (49615964805).

Almost surely, 2^99231929609 is an apocalyptic number.

It is an amenable number.

99231929609 is a deficient number, since it is larger than the sum of its proper divisors (1).

99231929609 is an equidigital number, since it uses as much as digits as its factorization.

99231929609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4251528, while the sum is 59.

The spelling of 99231929609 in words is "ninety-nine billion, two hundred thirty-one million, nine hundred twenty-nine thousand, six hundred nine".