4591440 has 120 divisors (see below), whose sum is σ = 17641728. Its totient is φ = 1048320.

The previous prime is 4591403. The next prime is 4591451. The reversal of 4591440 is 441954.

It is a tau number, because it is divible by the number of its divisors (120).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4585 + ... + 5495.

Almost surely, 2^4591440 is an apocalyptic number.

4591440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4591440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8820864).

4591440 is an abundant number, since it is smaller than the sum of its proper divisors (13050288).

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

4591440 is a wasteful number, since it uses less digits than its factorization.

4591440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 937 (or 928 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 4591440 is about 2142.7645694289. The cubic root of 4591440 is about 166.2071252055.

It can be divided in two parts, 45914 and 40, that added together give a palindrome (45954).

The spelling of 4591440 in words is "four million, five hundred ninety-one thousand, four hundred forty".