99806729 has 12 divisors (see below), whose sum is σ = 114477888. Its totient is φ = 86786040.

The previous prime is 99806713. The next prime is 99806731. The reversal of 99806729 is 92760899.

It is not a de Polignac number, because 99806729 - 2⁴ = 99806713 is a prime.

It is a super-2 number, since 2×99806729² = 19922766307358882, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99806789) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15149 + ... + 20714.

It is an arithmetic number, because the mean of its divisors is an integer number (9539824).

Almost surely, 2^99806729 is an apocalyptic number.

It is an amenable number.

99806729 is a deficient number, since it is larger than the sum of its proper divisors (14671159).

99806729 is a wasteful number, since it uses less digits than its factorization.

99806729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35908 (or 35897 counting only the distinct ones).

The product of its (nonzero) digits is 489888, while the sum is 50.

The square root of 99806729 is about 9990.3317762725. The cubic root of 99806729 is about 463.8596623374.

The spelling of 99806729 in words is "ninety-nine million, eight hundred six thousand, seven hundred twenty-nine".