9899420793 has 16 divisors (see below), whose sum is σ = 13904563200. Its totient is φ = 6247478160.

The previous prime is 9899420789. The next prime is 9899420819. The reversal of 9899420793 is 3970249989.

It is not a de Polignac number, because 9899420793 - 2² = 9899420789 is a prime.

It is not an unprimeable number, because it can be changed into a prime (9899490793) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9348 + ... + 141018.

It is an arithmetic number, because the mean of its divisors is an integer number (869035200).

Almost surely, 2^9899420793 is an apocalyptic number.

It is an amenable number.

9899420793 is a deficient number, since it is larger than the sum of its proper divisors (4005142407).

9899420793 is a wasteful number, since it uses less digits than its factorization.

9899420793 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133012.

The product of its (nonzero) digits is 8817984, while the sum is 60.

The square root of 9899420793 is about 99495.8330433994. The cubic root of 9899420793 is about 2147.1872931125.

The spelling of 9899420793 in words is "nine billion, eight hundred ninety-nine million, four hundred twenty thousand, seven hundred ninety-three".