4120789644 has 72 divisors (see below), whose sum is σ = 10741257072. Its totient is φ = 1331391360.

The previous prime is 4120789639. The next prime is 4120789667. The reversal of 4120789644 is 4469870214.

4120789644 is digitally balanced in base 2 and base 4, because in such bases 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 4120789644.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 145354 + ... + 171374.

It is an arithmetic number, because the mean of its divisors is an integer number (149184126).

Almost surely, 2^4120789644 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 4120789644, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5370628536).

4120789644 is an abundant number, since it is smaller than the sum of its proper divisors (6620467428).

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

4120789644 is a wasteful number, since it uses less digits than its factorization.

4120789644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26167 (or 26162 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 45.

The square root of 4120789644 is about 64193.3769480933. The cubic root of 4120789644 is about 1603.2213282792.

The spelling of 4120789644 in words is "four billion, one hundred twenty million, seven hundred eighty-nine thousand, six hundred forty-four".