4391660 has 96 divisors (see below), whose sum is σ = 12042240. Its totient is φ = 1306368.

The previous prime is 4391659. The next prime is 4391671. The reversal of 4391660 is 661934.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 34517 + ... + 34643.

It is an arithmetic number, because the mean of its divisors is an integer number (125440).

Almost surely, 2^4391660 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 4391660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6021120).

4391660 is an abundant number, since it is smaller than the sum of its proper divisors (7650580).

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

4391660 is a wasteful number, since it uses less digits than its factorization.

4391660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175 (or 173 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 29.

The square root of 4391660 is about 2095.6287839214. The cubic root of 4391660 is about 163.7606562224.

The spelling of 4391660 in words is "four million, three hundred ninety-one thousand, six hundred sixty".