9019990797 has 16 divisors (see below), whose sum is σ = 12088162368. Its totient is φ = 5982641280.

The previous prime is 9019990789. The next prime is 9019990801. The reversal of 9019990797 is 7970999109.

It is not a de Polignac number, because 9019990797 - 2³ = 9019990789 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 9019990797.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9019990787) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 553153 + ... + 569225.

It is an arithmetic number, because the mean of its divisors is an integer number (755510148).

Almost surely, 2^9019990797 is an apocalyptic number.

It is an amenable number.

9019990797 is a deficient number, since it is larger than the sum of its proper divisors (3068171571).

9019990797 is a wasteful number, since it uses less digits than its factorization.

9019990797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17020.

The product of its (nonzero) digits is 2893401, while the sum is 60.

The square root of 9019990797 is about 94973.6321143927. The cubic root of 9019990797 is about 2081.6227780031.

The spelling of 9019990797 in words is "nine billion, nineteen million, nine hundred ninety thousand, seven hundred ninety-seven".