999900106 has 8 divisors (see below), whose sum is σ = 1551569220. Its totient is φ = 482710368.

The previous prime is 999900079. The next prime is 999900107. The reversal of 999900106 is 601009999.

It can be written as a sum of positive squares in 2 ways, for example, as 963792025 + 36108081 = 31045^2 + 6009^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×999900106² = 1999600443957622472, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (999900107) 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, 8619771 + ... + 8619886.

Almost surely, 2^999900106 is an apocalyptic number.

999900106 is a deficient number, since it is larger than the sum of its proper divisors (551669114).

999900106 is a wasteful number, since it uses less digits than its factorization.

999900106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17239688.

The product of its (nonzero) digits is 39366, while the sum is 43.

The square root of 999900106 is about 31621.1970994142. The cubic root of 999900106 is about 999.9667008912.

The spelling of 999900106 in words is "nine hundred ninety-nine million, nine hundred thousand, one hundred six".