8389864272 has 20 divisors (see below), whose sum is σ = 21673816160. Its totient is φ = 2796621408.

The previous prime is 8389864243. The next prime is 8389864283. The reversal of 8389864272 is 2724689838.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 87394372 + ... + 87394467.

It is an arithmetic number, because the mean of its divisors is an integer number (1083690808).

Almost surely, 2^8389864272 is an apocalyptic number.

It is an amenable number.

8389864272 is an abundant number, since it is smaller than the sum of its proper divisors (13283951888).

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

8389864272 is a wasteful number, since it uses less digits than its factorization.

8389864272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174788850 (or 174788844 counting only the distinct ones).

The product of its digits is 9289728, while the sum is 57.

The square root of 8389864272 is about 91596.2022793522. The cubic root of 8389864272 is about 2031.9747720947.

The spelling of 8389864272 in words is "eight billion, three hundred eighty-nine million, eight hundred sixty-four thousand, two hundred seventy-two".