10008999 has 72 divisors (see below), whose sum is σ = 19752096. Its totient is φ = 4752000.

The previous prime is 10008983. The next prime is 10009003. The reversal of 10008999 is 99980001.

10008999 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 10008999 - 2⁴ = 10008983 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10008959) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 99049 + ... + 99149.

Almost surely, 2^10008999 is an apocalyptic number.

10008999 is a deficient number, since it is larger than the sum of its proper divisors (9743097).

10008999 is a wasteful number, since it uses less digits than its factorization.

10008999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149 (or 135 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 36.

The square root of 10008999 is about 3163.7002070361. The cubic root of 10008999 is about 215.5080754865.

It can be divided in two parts, 1000 and 8999, that added together give a palindrome (9999).

The spelling of 10008999 in words is "ten million, eight thousand, nine hundred ninety-nine".