1000099989 has 12 divisors (see below), whose sum is σ = 1650958816. Its totient is φ = 571485672.

The previous prime is 1000099967. The next prime is 1000099993. The reversal of 1000099989 is 9899900001.

1000099989 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1000099989 - 2⁵ = 1000099957 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000099999) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7937239 + ... + 7937364.

Almost surely, 2^1000099989 is an apocalyptic number.

It is an amenable number.

1000099989 is a deficient number, since it is larger than the sum of its proper divisors (650858827).

1000099989 is a wasteful number, since it uses less digits than its factorization.

1000099989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15874616 (or 15874613 counting only the distinct ones).

The product of its (nonzero) digits is 52488, while the sum is 45.

The square root of 1000099989 is about 31624.3575270708. The cubic root of 1000099989 is about 1000.0333285559.

The spelling of 1000099989 in words is "one billion, ninety-nine thousand, nine hundred eighty-nine".