8639472 has 20 divisors (see below), whose sum is σ = 22318760. Its totient is φ = 2879808.

The previous prime is 8639461. The next prime is 8639507. The reversal of 8639472 is 2749368.

8639472 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 8639472.

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, 89947 + ... + 90042.

It is an arithmetic number, because the mean of its divisors is an integer number (1115938).

Almost surely, 2^8639472 is an apocalyptic number.

It is an amenable number.

8639472 is an abundant number, since it is smaller than the sum of its proper divisors (13679288).

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

8639472 is a wasteful number, since it uses less digits than its factorization.

8639472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180000 (or 179994 counting only the distinct ones).

The product of its digits is 72576, while the sum is 39.

The square root of 8639472 is about 2939.2978753437. The cubic root of 8639472 is about 205.1929335749.

The spelling of 8639472 in words is "eight million, six hundred thirty-nine thousand, four hundred seventy-two".