999424512 has 120 divisors (see below), whose sum is σ = 2912800176. Its totient is φ = 329865216.

The previous prime is 999424507. The next prime is 999424513. The reversal of 999424512 is 215424999.

999424512 is a `hidden beast` number, since 9 + 99 + 42 + 4 + 512 = 666.

It is not an unprimeable number, because it can be changed into a prime (999424513) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 492043 + ... + 494069.

Almost surely, 2^999424512 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 999424512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1456400088).

999424512 is an abundant number, since it is smaller than the sum of its proper divisors (1913375664).

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

999424512 is a wasteful number, since it uses less digits than its factorization.

999424512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2158 (or 2139 counting only the distinct ones).

The product of its digits is 233280, while the sum is 45.

The square root of 999424512 is about 31613.6760279471. The cubic root of 999424512 is about 999.8081338564.

The spelling of 999424512 in words is "nine hundred ninety-nine million, four hundred twenty-four thousand, five hundred twelve".