999000887 has 4 divisors (see below), whose sum is σ = 1013911416. Its totient is φ = 984090360.

The previous prime is 999000841. The next prime is 999000901. The reversal of 999000887 is 788000999.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 788000999 = 23 ⋅34260913.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-999000887 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 (999000817) 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, 7455164 + ... + 7455297.

It is an arithmetic number, because the mean of its divisors is an integer number (253477854).

Almost surely, 2^999000887 is an apocalyptic number.

999000887 is a deficient number, since it is larger than the sum of its proper divisors (14910529).

999000887 is a wasteful number, since it uses less digits than its factorization.

999000887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14910528.

The product of its (nonzero) digits is 326592, while the sum is 50.

The square root of 999000887 is about 31606.9752902741. The cubic root of 999000887 is about 999.6668513576. Note that the first 3 decimals are identical.

The spelling of 999000887 in words is "nine hundred ninety-nine million, eight hundred eighty-seven", and thus it is an aban number.