99533909 has 2 divisors, whose sum is σ = 99533910. Its totient is φ = 99533908.

The previous prime is 99533899. The next prime is 99533957. The reversal of 99533909 is 90933599.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 66471409 + 33062500 = 8153^2 + 5750^2 .

It is a cyclic number.

It is not a de Polignac number, because 99533909 - 2⁴ = 99533893 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99533999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49766954 + 49766955.

It is an arithmetic number, because the mean of its divisors is an integer number (49766955).

Almost surely, 2^99533909 is an apocalyptic number.

It is an amenable number.

99533909 is a deficient number, since it is larger than the sum of its proper divisors (1).

99533909 is an equidigital number, since it uses as much as digits as its factorization.

99533909 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 295245, while the sum is 47.

The square root of 99533909 is about 9976.6682314288. The cubic root of 99533909 is about 463.4366258101.

The spelling of 99533909 in words is "ninety-nine million, five hundred thirty-three thousand, nine hundred nine".