4080891320 has 128 divisors (see below), whose sum is σ = 10328947200. Its totient is φ = 1438041600.

The previous prime is 4080891313. The next prime is 4080891323. The reversal of 4080891320 is 231980804.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4080891323) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7146635 + ... + 7147205.

It is an arithmetic number, because the mean of its divisors is an integer number (80694900).

Almost surely, 2^4080891320 is an apocalyptic number.

4080891320 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4080891320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5164473600).

4080891320 is an abundant number, since it is smaller than the sum of its proper divisors (6248055880).

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

4080891320 is a wasteful number, since it uses less digits than its factorization.

4080891320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1069 (or 1065 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 35.

The square root of 4080891320 is about 63881.8543876115. The cubic root of 4080891320 is about 1598.0303001299.

The spelling of 4080891320 in words is "four billion, eighty million, eight hundred ninety-one thousand, three hundred twenty".