4488723891 has 8 divisors (see below), whose sum is σ = 6649961360. Its totient is φ = 2992482576.

The previous prime is 4488723887. The next prime is 4488723919. The reversal of 4488723891 is 1983278844.

It is a happy number.

4488723891 is a `hidden beast` number, since 4 + 488 + 72 + 3 + 8 + 91 = 666.

4488723891 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 4488723891 - 2² = 4488723887 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4488723821) 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, 83124490 + ... + 83124543.

It is an arithmetic number, because the mean of its divisors is an integer number (831245170).

Almost surely, 2^4488723891 is an apocalyptic number.

4488723891 is a deficient number, since it is larger than the sum of its proper divisors (2161237469).

4488723891 is a wasteful number, since it uses less digits than its factorization.

4488723891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166249042 (or 166249036 counting only the distinct ones).

The product of its digits is 3096576, while the sum is 54.

The square root of 4488723891 is about 66997.9394533892. The cubic root of 4488723891 is about 1649.5834750268.

The spelling of 4488723891 in words is "four billion, four hundred eighty-eight million, seven hundred twenty-three thousand, eight hundred ninety-one".