8472638922 has 16 divisors (see below), whose sum is σ = 18485757792. Its totient is φ = 2567466320.

The previous prime is 8472638903. The next prime is 8472638929. The reversal of 8472638922 is 2298362748.

It is a happy number.

It is a super-2 number, since 2×8472638922² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (8472638929) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64186593 + ... + 64186724.

It is an arithmetic number, because the mean of its divisors is an integer number (1155359862).

Almost surely, 2^8472638922 is an apocalyptic number.

8472638922 is an abundant number, since it is smaller than the sum of its proper divisors (10013118870).

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

8472638922 is a wasteful number, since it uses less digits than its factorization.

8472638922 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128373333.

The product of its digits is 2322432, while the sum is 51.

The square root of 8472638922 is about 92046.9386889102. The cubic root of 8472638922 is about 2038.6354229679.

The spelling of 8472638922 in words is "eight billion, four hundred seventy-two million, six hundred thirty-eight thousand, nine hundred twenty-two".