9981100499 has 4 divisors (see below), whose sum is σ = 10069428936. Its totient is φ = 9892772064.

The previous prime is 9981100489. The next prime is 9981100513. The reversal of 9981100499 is 9940011899.

9981100499 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 9981100499 - 2¹⁶ = 9981034963 is a prime.

It is a super-2 number, since 2×9981100499² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9981100489) 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, 44164049 + ... + 44164274.

It is an arithmetic number, because the mean of its divisors is an integer number (2517357234).

Almost surely, 2^9981100499 is an apocalyptic number.

9981100499 is a deficient number, since it is larger than the sum of its proper divisors (88328437).

9981100499 is a wasteful number, since it uses less digits than its factorization.

9981100499 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88328436.

The product of its (nonzero) digits is 209952, while the sum is 50.

The square root of 9981100499 is about 99905.4578038658. The cubic root of 9981100499 is about 2153.0765760637.

The spelling of 9981100499 in words is "nine billion, nine hundred eighty-one million, one hundred thousand, four hundred ninety-nine".