999022650 has 48 divisors (see below), whose sum is σ = 2494260000. Its totient is φ = 264612160.

The previous prime is 999022639. The next prime is 999022667. The reversal of 999022650 is 56220999.

999022650 is a nontrivial binomial coefficient, being equal to C(44700, 2).

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, 1 + ... + 44699.

It is an arithmetic number, because the mean of its divisors is an integer number (51963750).

Almost surely, 2^999022650 is an apocalyptic number.

999022650 is the 44699-th triangular number and also the 22350-th hexagonal number.

It is a practical number, because each smaller number is the sum of distinct divisors of 999022650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1247130000).

999022650 is an abundant number, since it is smaller than the sum of its proper divisors (1495237350).

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

999022650 is a wasteful number, since it uses less digits than its factorization.

999022650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44863 (or 44858 counting only the distinct ones).

The product of its (nonzero) digits is 87480, while the sum is 42.

The square root of 999022650 is about 31607.3195636707. The cubic root of 999022650 is about 999.6741104742.

It can be divided in two parts, 9990 and 22650, that added together give a triangular number (32640 = T₂₅₅).

The spelling of 999022650 in words is "nine hundred ninety-nine million, twenty-two thousand, six hundred fifty".