4129545789 has 48 divisors (see below), whose sum is σ = 6234110064. Its totient is φ = 2632089600.

The previous prime is 4129545733. The next prime is 4129545821. The reversal of 4129545789 is 9875459214.

It is a happy number.

4129545789 is a `hidden beast` number, since 4 + 1 + 29 + 545 + 78 + 9 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 1287589689 + 2841956100 = 35883^2 + 53310^2 .

It is not a de Polignac number, because 4129545789 - 2⁷ = 4129545661 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4129545389) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4044099 + ... + 4045119.

It is an arithmetic number, because the mean of its divisors is an integer number (129877293).

Almost surely, 2^4129545789 is an apocalyptic number.

It is an amenable number.

4129545789 is a deficient number, since it is larger than the sum of its proper divisors (2104564275).

4129545789 is a wasteful number, since it uses less digits than its factorization.

4129545789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1278 (or 1275 counting only the distinct ones).

The product of its digits is 3628800, while the sum is 54.

The square root of 4129545789 is about 64261.5420683320. The cubic root of 4129545789 is about 1604.3560709171.

The spelling of 4129545789 in words is "four billion, one hundred twenty-nine million, five hundred forty-five thousand, seven hundred eighty-nine".