999918234 has 48 divisors (see below), whose sum is σ = 2489011200. Its totient is φ = 284188320.

The previous prime is 999918191. The next prime is 999918313. The reversal of 999918234 is 432819999.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3292 + ... + 44840.

It is an arithmetic number, because the mean of its divisors is an integer number (51854400).

Almost surely, 2^999918234 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 999918234, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1244505600).

999918234 is an abundant number, since it is smaller than the sum of its proper divisors (1489092966).

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

999918234 is a wasteful number, since it uses less digits than its factorization.

999918234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41755 (or 41752 counting only the distinct ones).

The product of its digits is 1259712, while the sum is 54.

The square root of 999918234 is about 31621.4837412794. The cubic root of 999918234 is about 999.9727439238.

The spelling of 999918234 in words is "nine hundred ninety-nine million, nine hundred eighteen thousand, two hundred thirty-four".