8579991420 has 1080 divisors, whose sum is σ = 37602002592. Its totient is φ = 1601233920.

The previous prime is 8579991401. The next prime is 8579991499. The reversal of 8579991420 is 241999758.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 359 ways as a sum of consecutive naturals, for example, 231891642 + ... + 231891678.

Almost surely, 2^8579991420 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 8579991420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18801001296).

8579991420 is an abundant number, since it is smaller than the sum of its proper divisors (29022011172).

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

8579991420 is a wasteful number, since it uses less digits than its factorization.

8579991420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113 (or 78 counting only the distinct ones).

The product of its (nonzero) digits is 1632960, while the sum is 54.

The square root of 8579991420 is about 92628.2431011190. The cubic root of 8579991420 is about 2047.2094825903.

It can be divided in two parts, 8579 and 991420, that added together give a palindrome (999999).

The spelling of 8579991420 in words is "eight billion, five hundred seventy-nine million, nine hundred ninety-one thousand, four hundred twenty".