999886089 has 4 divisors (see below), whose sum is σ = 1333181456. Its totient is φ = 666590724.

The previous prime is 999886087. The next prime is 999886109. The reversal of 999886089 is 980688999.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 999886089 - 2¹ = 999886087 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (999886081) 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, 166647679 + ... + 166647684.

It is an arithmetic number, because the mean of its divisors is an integer number (333295364).

Almost surely, 2^999886089 is an apocalyptic number.

It is an amenable number.

999886089 is a deficient number, since it is larger than the sum of its proper divisors (333295367).

999886089 is a wasteful number, since it uses less digits than its factorization.

999886089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333295366.

The product of its (nonzero) digits is 20155392, while the sum is 66.

The square root of 999886089 is about 31620.9754593371. The cubic root of 999886089 is about 999.9620282248.

The spelling of 999886089 in words is "nine hundred ninety-nine million, eight hundred eighty-six thousand, eighty-nine".