7789622040 has 128 divisors (see below), whose sum is σ = 26089228800. Its totient is φ = 2067327360.

The previous prime is 7789622017. The next prime is 7789622047. The reversal of 7789622040 is 402269877.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7789622047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 210789 + ... + 244971.

It is an arithmetic number, because the mean of its divisors is an integer number (203822100).

Almost surely, 2^7789622040 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 7789622040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13044614400).

7789622040 is an abundant number, since it is smaller than the sum of its proper divisors (18299606760).

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

7789622040 is a wasteful number, since it uses less digits than its factorization.

7789622040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34414 (or 34404 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 45.

The square root of 7789622040 is about 88258.8354783814. The cubic root of 7789622040 is about 1982.3125413579.

The spelling of 7789622040 in words is "seven billion, seven hundred eighty-nine million, six hundred twenty-two thousand, forty".