100009989 has 12 divisors (see below), whose sum is σ = 144549600. Its totient is φ = 66631464.

The previous prime is 100009979. The next prime is 100010017. The reversal of 100009989 is 989900001.

It is not a de Polignac number, because 100009989 - 2⁸ = 100009733 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100009969) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19872 + ... + 24390.

It is an arithmetic number, because the mean of its divisors is an integer number (12045800).

Almost surely, 2^100009989 is an apocalyptic number.

It is an amenable number.

100009989 is a deficient number, since it is larger than the sum of its proper divisors (44539611).

100009989 is a wasteful number, since it uses less digits than its factorization.

100009989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6984 (or 6981 counting only the distinct ones).

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

The square root of 100009989 is about 10000.4994375281. The cubic root of 100009989 is about 464.1743377903.

The spelling of 100009989 in words is "one hundred million, nine thousand, nine hundred eighty-nine".