99269921 has 2 divisors, whose sum is σ = 99269922. Its totient is φ = 99269920.

The previous prime is 99269893. The next prime is 99269923. The reversal of 99269921 is 12996299.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 99221521 + 48400 = 9961^2 + 220^2 .

It is a cyclic number.

It is not a de Polignac number, because 99269921 - 2²⁶ = 32161057 is a prime.

Together with 99269923, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (99269923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49634960 + 49634961.

It is an arithmetic number, because the mean of its divisors is an integer number (49634961).

Almost surely, 2^99269921 is an apocalyptic number.

It is an amenable number.

99269921 is a deficient number, since it is larger than the sum of its proper divisors (1).

99269921 is an equidigital number, since it uses as much as digits as its factorization.

99269921 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 157464, while the sum is 47.

The square root of 99269921 is about 9963.4291787517. The cubic root of 99269921 is about 463.0265477145.

The spelling of 99269921 in words is "ninety-nine million, two hundred sixty-nine thousand, nine hundred twenty-one".