999044087 has 4 divisors (see below), whose sum is σ = 999759600. Its totient is φ = 998328576.

The previous prime is 999044047. The next prime is 999044093. The reversal of 999044087 is 780440999.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 999044087 - 2⁶ = 999044023 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (999044017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 355658 + ... + 358455.

It is an arithmetic number, because the mean of its divisors is an integer number (249939900).

Almost surely, 2^999044087 is an apocalyptic number.

999044087 is a deficient number, since it is larger than the sum of its proper divisors (715513).

999044087 is a wasteful number, since it uses less digits than its factorization.

999044087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 715512.

The product of its (nonzero) digits is 653184, while the sum is 50.

The square root of 999044087 is about 31607.6586763398. The cubic root of 999044087 is about 999.6812607494.

The spelling of 999044087 in words is "nine hundred ninety-nine million, forty-four thousand, eighty-seven".