9980109899 has 16 divisors (see below), whose sum is σ = 10483138560. Its totient is φ = 9488772000.

The previous prime is 9980109859. The next prime is 9980109911. The reversal of 9980109899 is 9989010899.

It is a cyclic number.

It is not a de Polignac number, because 9980109899 - 2¹⁶ = 9980044363 is a prime.

It is a super-2 number, since 2×9980109899² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (9980109859) 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, 1947062 + ... + 1952180.

It is an arithmetic number, because the mean of its divisors is an integer number (655196160).

Almost surely, 2^9980109899 is an apocalyptic number.

9980109899 is a deficient number, since it is larger than the sum of its proper divisors (503028661).

9980109899 is a wasteful number, since it uses less digits than its factorization.

9980109899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6242.

The product of its (nonzero) digits is 3779136, while the sum is 62.

The square root of 9980109899 is about 99900.4999937438. The cubic root of 9980109899 is about 2153.0053444989.

The spelling of 9980109899 in words is "nine billion, nine hundred eighty million, one hundred nine thousand, eight hundred ninety-nine".