9820090799 has 4 divisors (see below), whose sum is σ = 9838243080. Its totient is φ = 9801938520.

The previous prime is 9820090759. The next prime is 9820090823. The reversal of 9820090799 is 9970900289.

9820090799 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 9820090799 - 2¹⁶ = 9820025263 is a prime.

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 9820090799.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9820090759) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9075329 + ... + 9076410.

It is an arithmetic number, because the mean of its divisors is an integer number (2459560770).

Almost surely, 2^9820090799 is an apocalyptic number.

9820090799 is a deficient number, since it is larger than the sum of its proper divisors (18152281).

9820090799 is a wasteful number, since it uses less digits than its factorization.

9820090799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18152280.

The product of its (nonzero) digits is 734832, while the sum is 53.

The square root of 9820090799 is about 99096.3712705970. The cubic root of 9820090799 is about 2141.4363373191.

The spelling of 9820090799 in words is "nine billion, eight hundred twenty million, ninety thousand, seven hundred ninety-nine".