4011440 has 40 divisors (see below), whose sum is σ = 9561888. Its totient is φ = 1564160.

The previous prime is 4011409. The next prime is 4011443. The reversal of 4011440 is 441104.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (4011443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2669 + ... + 3891.

Almost surely, 2^4011440 is an apocalyptic number.

4011440 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 4011440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4780944).

4011440 is an abundant number, since it is smaller than the sum of its proper divisors (5550448).

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

4011440 is a wasteful number, since it uses less digits than its factorization.

4011440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1277 (or 1271 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 4011440 is about 2002.8579580190. The cubic root of 4011440 is about 158.8912933892.

Adding to 4011440 its reverse (441104), we get a palindrome (4452544).

The spelling of 4011440 in words is "four million, eleven thousand, four hundred forty".