999000940 has 48 divisors (see below), whose sum is σ = 2453375232. Its totient is φ = 334547136.

The previous prime is 999000911. The next prime is 999000941. The reversal of 999000940 is 49000999.

It is a junction number, because it is equal to n+sod(n) for n = 999000893 and 999000902.

It is not an unprimeable number, because it can be changed into a prime (999000941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 76954 + ... + 88993.

It is an arithmetic number, because the mean of its divisors is an integer number (51111984).

Almost surely, 2^999000940 is an apocalyptic number.

It is an amenable number.

999000940 is an abundant number, since it is smaller than the sum of its proper divisors (1454374292).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

999000940 is a wasteful number, since it uses less digits than its factorization.

999000940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166006 (or 166004 counting only the distinct ones).

The product of its (nonzero) digits is 26244, while the sum is 40.

The square root of 999000940 is about 31606.9761286967. The cubic root of 999000940 is about 999.6668690361. Note that the first 3 decimals are identical.

The spelling of 999000940 in words is "nine hundred ninety-nine million, nine hundred forty", and thus it is an aban number.