4391140 has 24 divisors (see below), whose sum is σ = 9931320. Its totient is φ = 1621248.

The previous prime is 4391131. The next prime is 4391161. The reversal of 4391140 is 411934.

It can be written as a sum of positive squares in 4 ways, for example, as 131044 + 4260096 = 362^2 + 2064^2 .

It is a super-2 number, since 2×4391140² = 38564220999200, which contains 22 as substring.

It is a nialpdrome in base 13.

It is an unprimeable number.

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, 8185 + ... + 8704.

It is an arithmetic number, because the mean of its divisors is an integer number (413805).

Almost surely, 2^4391140 is an apocalyptic number.

It is an amenable number.

4391140 is an abundant number, since it is smaller than the sum of its proper divisors (5540180).

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

4391140 is a wasteful number, since it uses less digits than its factorization.

4391140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16911 (or 16909 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 4391140 is about 2095.5047124738. The cubic root of 4391140 is about 163.7541925388.

The spelling of 4391140 in words is "four million, three hundred ninety-one thousand, one hundred forty".