9906820799 has 8 divisors (see below), whose sum is σ = 10583879040. Its totient is φ = 9245327256.

The previous prime is 9906820793. The next prime is 9906820811. The reversal of 9906820799 is 9970286099.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 9906820799 - 2⁸ = 9906820543 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9906820793) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3889859 + ... + 3892404.

It is an arithmetic number, because the mean of its divisors is an integer number (1322984880).

Almost surely, 2^9906820799 is an apocalyptic number.

9906820799 is a deficient number, since it is larger than the sum of its proper divisors (677058241).

9906820799 is a wasteful number, since it uses less digits than its factorization.

9906820799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7782349.

The product of its (nonzero) digits is 4408992, while the sum is 59.

The square root of 9906820799 is about 99533.0136135745. The cubic root of 9906820799 is about 2147.7221810172.

The spelling of 9906820799 in words is "nine billion, nine hundred six million, eight hundred twenty thousand, seven hundred ninety-nine".