999002005 has 16 divisors (see below), whose sum is σ = 1255852800. Its totient is φ = 761866560.

The previous prime is 999001999. The next prime is 999002051. The reversal of 999002005 is 500200999.

It is not a de Polignac number, because 999002005 - 2¹¹ = 998999957 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32151 + ... + 55060.

It is an arithmetic number, because the mean of its divisors is an integer number (78490800).

Almost surely, 2^999002005 is an apocalyptic number.

It is an amenable number.

999002005 is a deficient number, since it is larger than the sum of its proper divisors (256850795).

999002005 is a wasteful number, since it uses less digits than its factorization.

999002005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87324.

The product of its (nonzero) digits is 7290, while the sum is 34.

The square root of 999002005 is about 31606.9929762387. The cubic root of 999002005 is about 999.6672242726.

The spelling of 999002005 in words is "nine hundred ninety-nine million, two thousand, five".