8430989826 has 64 divisors (see below), whose sum is σ = 20424130560. Its totient is φ = 2264966400.

The previous prime is 8430989797. The next prime is 8430989899. The reversal of 8430989826 is 6289890348.

It is a super-2 number, since 2×8430989826² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 816685 + ... + 826943.

It is an arithmetic number, because the mean of its divisors is an integer number (319127040).

Almost surely, 2^8430989826 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8430989826, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10212065280).

8430989826 is an abundant number, since it is smaller than the sum of its proper divisors (11993140734).

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

8430989826 is a wasteful number, since it uses less digits than its factorization.

8430989826 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11439.

The product of its (nonzero) digits is 5971968, while the sum is 57.

The square root of 8430989826 is about 91820.4216174158. The cubic root of 8430989826 is about 2035.2894827316.

The spelling of 8430989826 in words is "eight billion, four hundred thirty million, nine hundred eighty-nine thousand, eight hundred twenty-six".