4000860 has 96 divisors (see below), whose sum is σ = 12902400. Its totient is φ = 1028160.

The previous prime is 4000853. The next prime is 4000861. The reversal of 4000860 is 680004.

4000860 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4000861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16621 + ... + 16859.

It is an arithmetic number, because the mean of its divisors is an integer number (134400).

Almost surely, 2^4000860 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 4000860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6451200).

4000860 is an abundant number, since it is smaller than the sum of its proper divisors (8901540).

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

4000860 is a wasteful number, since it uses less digits than its factorization.

4000860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 288 (or 280 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 4000860 is about 2000.2149884450. The cubic root of 4000860 is about 158.7514807558.

Adding to 4000860 its reverse (680004), we get a palindrome (4680864).

The spelling of 4000860 in words is "four million, eight hundred sixty", and thus it is an aban number.