1040440 has 48 divisors (see below), whose sum is σ = 2532600. Its totient is φ = 383616.

The previous prime is 1040419. The next prime is 1040447. The reversal of 1040440 is 440401.

It is a happy number.

1040440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a zygodrome in base 2.

It is a self number, because there is not a number n which added to its sum of digits gives 1040440.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1040447) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28102 + ... + 28138.

2^1040440 is an apocalyptic number.

1040440 is a gapful number since it is divisible by the number (10) 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 1040440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1266300).

1040440 is an abundant number, since it is smaller than the sum of its proper divisors (1492160).

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

1040440 is a wasteful number, since it uses less digits than its factorization.

1040440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104 (or 63 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 13.

The square root of 1040440 is about 1020.0196076547. The cubic root of 1040440 is about 101.3302265129.

Adding to 1040440 its reverse (440401), we get a palindrome (1480841).

The spelling of 1040440 in words is "one million, forty thousand, four hundred forty".