99100100009 has 4 divisors (see below), whose sum is σ = 100081289220. Its totient is φ = 98118910800.

The previous prime is 99100099963. The next prime is 99100100017. The reversal of 99100100009 is 90000100199.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 41306497600 + 57793602409 = 203240^2 + 240403^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99100100009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99100105009) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 490594454 + ... + 490594655.

It is an arithmetic number, because the mean of its divisors is an integer number (25020322305).

Almost surely, 2^99100100009 is an apocalyptic number.

It is an amenable number.

99100100009 is a deficient number, since it is larger than the sum of its proper divisors (981189211).

99100100009 is a wasteful number, since it uses less digits than its factorization.

99100100009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 981189210.

The product of its (nonzero) digits is 729, while the sum is 29.

The spelling of 99100100009 in words is "ninety-nine billion, one hundred million, one hundred thousand, nine".