9909866229 has 4 divisors (see below), whose sum is σ = 13213154976. Its totient is φ = 6606577484.

The previous prime is 9909866221. The next prime is 9909866231. The reversal of 9909866229 is 9226689099.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 9909866229 - 2³ = 9909866221 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9909866221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1651644369 + ... + 1651644374.

It is an arithmetic number, because the mean of its divisors is an integer number (3303288744).

Almost surely, 2^9909866229 is an apocalyptic number.

It is an amenable number.

9909866229 is a deficient number, since it is larger than the sum of its proper divisors (3303288747).

9909866229 is a wasteful number, since it uses less digits than its factorization.

9909866229 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3303288746.

The product of its (nonzero) digits is 7558272, while the sum is 60.

The square root of 9909866229 is about 99548.3110303736. The cubic root of 9909866229 is about 2147.9422336989.

The spelling of 9909866229 in words is "nine billion, nine hundred nine million, eight hundred sixty-six thousand, two hundred twenty-nine".