4391320 has 32 divisors (see below), whose sum is σ = 9940320. Its totient is φ = 1745920.

The previous prime is 4391263. The next prime is 4391323. The reversal of 4391320 is 231934.

It is a junction number, because it is equal to n+sod(n) for n = 4391291 and 4391300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4391323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12264 + ... + 12616.

It is an arithmetic number, because the mean of its divisors is an integer number (310635).

Almost surely, 2^4391320 is an apocalyptic number.

4391320 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4391320 is an abundant number, since it is smaller than the sum of its proper divisors (5549000).

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

4391320 is a wasteful number, since it uses less digits than its factorization.

4391320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 675 (or 671 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 4391320 is about 2095.5476611139. The cubic root of 4391320 is about 163.7564300255.

The spelling of 4391320 in words is "four million, three hundred ninety-one thousand, three hundred twenty".