9899923011 has 16 divisors (see below), whose sum is σ = 14445909120. Its totient is φ = 5980777920.

The previous prime is 9899923003. The next prime is 9899923057. The reversal of 9899923011 is 1103299989.

It is not a de Polignac number, because 9899923011 - 2³ = 9899923003 is a prime.

It is a super-2 number, since 2×9899923011² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (9899923091) 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, 468901 + ... + 489558.

It is an arithmetic number, because the mean of its divisors is an integer number (902869320).

Almost surely, 2^9899923011 is an apocalyptic number.

9899923011 is a deficient number, since it is larger than the sum of its proper divisors (4545986109).

9899923011 is a wasteful number, since it uses less digits than its factorization.

9899923011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 958786.

The product of its (nonzero) digits is 314928, while the sum is 51.

The square root of 9899923011 is about 99498.3568256280. The cubic root of 9899923011 is about 2147.2236029093.

The spelling of 9899923011 in words is "nine billion, eight hundred ninety-nine million, nine hundred twenty-three thousand, eleven".