1140440 has 32 divisors (see below), whose sum is σ = 2933280. Its totient is φ = 390912.

The previous prime is 1140439. The next prime is 1140449. The reversal of 1140440 is 440411.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1140449) 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, 1757 + ... + 2316.

It is an arithmetic number, because the mean of its divisors is an integer number (91665).

2^1140440 is an apocalyptic number.

1140440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1140440 is an abundant number, since it is smaller than the sum of its proper divisors (1792840).

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

1140440 is a wasteful number, since it uses less digits than its factorization.

1140440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4091 (or 4087 counting only the distinct ones).

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

The square root of 1140440 is about 1067.9138542036. The cubic root of 1140440 is about 104.4778308169.

Adding to 1140440 its reverse (440411), we get a palindrome (1580851).

The spelling of 1140440 in words is "one million, one hundred forty thousand, four hundred forty".