999879000189 has 16 divisors (see below), whose sum is σ = 1378599728832. Its totient is φ = 644247571968.

The previous prime is 999879000187. The next prime is 999879000199. The reversal of 999879000189 is 981000978999.

It is not a de Polignac number, because 999879000189 - 2¹ = 999879000187 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (999879000187) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46918804 + ... + 46940109.

It is an arithmetic number, because the mean of its divisors is an integer number (86162483052).

Almost surely, 2^999879000189 is an apocalyptic number.

It is an amenable number.

999879000189 is a deficient number, since it is larger than the sum of its proper divisors (378720728643).

999879000189 is a wasteful number, since it uses less digits than its factorization.

999879000189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93859036.

The product of its (nonzero) digits is 26453952, while the sum is 69.

The spelling of 999879000189 in words is "nine hundred ninety-nine billion, eight hundred seventy-nine million, one hundred eighty-nine", and thus it is an aban number.