4423643172 has 96 divisors (see below), whose sum is σ = 12448665600. Its totient is φ = 1350349056.

The previous prime is 4423643171. The next prime is 4423643179. The reversal of 4423643172 is 2713463244.

4423643172 is a `hidden beast` number, since 4 + 4 + 2 + 3 + 643 + 1 + 7 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (4423643171) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 165904 + ... + 190712.

It is an arithmetic number, because the mean of its divisors is an integer number (129673600).

Almost surely, 2^4423643172 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 4423643172, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6224332800).

4423643172 is an abundant number, since it is smaller than the sum of its proper divisors (8025022428).

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

4423643172 is a wasteful number, since it uses less digits than its factorization.

4423643172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24962 (or 24954 counting only the distinct ones).

The product of its digits is 96768, while the sum is 36.

The square root of 4423643172 is about 66510.4741525724. The cubic root of 4423643172 is about 1641.5723533142.

The spelling of 4423643172 in words is "four billion, four hundred twenty-three million, six hundred forty-three thousand, one hundred seventy-two".