999489536 has 68 divisors (see below), whose sum is σ = 2032124784. Its totient is φ = 491520000.

The previous prime is 999489527. The next prime is 999489571. The reversal of 999489536 is 635984999.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6619061 + ... + 6619211.

It is an arithmetic number, because the mean of its divisors is an integer number (29884188).

Almost surely, 2^999489536 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 999489536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1016062392).

999489536 is an abundant number, since it is smaller than the sum of its proper divisors (1032635248).

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

999489536 is an equidigital number, since it uses as much as digits as its factorization.

999489536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284 (or 254 counting only the distinct ones).

The product of its digits is 18895680, while the sum is 62.

The square root of 999489536 is about 31614.7044268960. The cubic root of 999489536 is about 999.8298163725.

The spelling of 999489536 in words is "nine hundred ninety-nine million, four hundred eighty-nine thousand, five hundred thirty-six".