8722973812 has 48 divisors (see below), whose sum is σ = 18022531072. Its totient is φ = 3615049440.

The previous prime is 8722973797. The next prime is 8722973849. The reversal of 8722973812 is 2183792278.

It is a happy number.

It is a super-2 number, since 2×8722973812² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1440463 + ... + 1446505.

Almost surely, 2^8722973812 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 8722973812, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9011265536).

8722973812 is an abundant number, since it is smaller than the sum of its proper divisors (9299557260).

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

8722973812 is a wasteful number, since it uses less digits than its factorization.

8722973812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7748 (or 7746 counting only the distinct ones).

The product of its digits is 677376, while the sum is 49.

The square root of 8722973812 is about 93396.8618958903. The cubic root of 8722973812 is about 2058.5188879117.

The spelling of 8722973812 in words is "eight billion, seven hundred twenty-two million, nine hundred seventy-three thousand, eight hundred twelve".