4129789820 has 48 divisors (see below), whose sum is σ = 9425428320. Its totient is φ = 1510845696.

The previous prime is 4129789813. The next prime is 4129789823. The reversal of 4129789820 is 289879214.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4129789823) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44522 + ... + 101201.

It is an arithmetic number, because the mean of its divisors is an integer number (196363090).

Almost surely, 2^4129789820 is an apocalyptic number.

It is an amenable number.

4129789820 is an abundant number, since it is smaller than the sum of its proper divisors (5295638500).

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

4129789820 is a wasteful number, since it uses less digits than its factorization.

4129789820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145854 (or 145852 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 50.

The square root of 4129789820 is about 64263.4407731176. The cubic root of 4129789820 is about 1604.3876728515.

The spelling of 4129789820 in words is "four billion, one hundred twenty-nine million, seven hundred eighty-nine thousand, eight hundred twenty".