99666269 has 4 divisors (see below), whose sum is σ = 100301244. Its totient is φ = 99031296.

The previous prime is 99666233. The next prime is 99666289. The reversal of 99666269 is 96266699.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 48372025 + 51294244 = 6955^2 + 7162^2 .

It is a cyclic number.

It is not a de Polignac number, because 99666269 - 2¹⁶ = 99600733 is a prime.

It is a super-2 number, since 2×99666269² = 19866730352760722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 99666269.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99666289) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 317252 + ... + 317565.

It is an arithmetic number, because the mean of its divisors is an integer number (25075311).

Almost surely, 2^99666269 is an apocalyptic number.

It is an amenable number.

99666269 is a deficient number, since it is larger than the sum of its proper divisors (634975).

99666269 is a wasteful number, since it uses less digits than its factorization.

99666269 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 634974.

The product of its digits is 1889568, while the sum is 53.

The square root of 99666269 is about 9983.2995046728. The cubic root of 99666269 is about 463.6419605292.

The spelling of 99666269 in words is "ninety-nine million, six hundred sixty-six thousand, two hundred sixty-nine".