4089221685 has 64 divisors (see below), whose sum is σ = 7509116160. Its totient is φ = 2109784320.

The previous prime is 4089221683. The next prime is 4089221711. The reversal of 4089221685 is 5861229804.

It is not a de Polignac number, because 4089221685 - 2¹ = 4089221683 is a prime.

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

It is a self number, because there is not a number n which added to its sum of digits gives 4089221685.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4089221683) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 901834 + ... + 906356.

It is an arithmetic number, because the mean of its divisors is an integer number (117329940).

Almost surely, 2^4089221685 is an apocalyptic number.

4089221685 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

4089221685 is a deficient number, since it is larger than the sum of its proper divisors (3419894475).

4089221685 is a wasteful number, since it uses less digits than its factorization.

4089221685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4755 (or 4749 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 45.

The square root of 4089221685 is about 63947.0224873684. The cubic root of 4089221685 is about 1599.1169195963.

The spelling of 4089221685 in words is "four billion, eighty-nine million, two hundred twenty-one thousand, six hundred eighty-five".