3440540 has 12 divisors (see below), whose sum is σ = 7225176. Its totient is φ = 1376208.

The previous prime is 3440537. The next prime is 3440543. The reversal of 3440540 is 450443.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (3440537) and next prime (3440543).

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 172027 = 3440540 / (3 + 4 + 4 + 0 + 5 + 4 + 0).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3440543) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 85994 + ... + 86033.

It is an arithmetic number, because the mean of its divisors is an integer number (602098).

Almost surely, 2^3440540 is an apocalyptic number.

It is an amenable number.

3440540 is an abundant number, since it is smaller than the sum of its proper divisors (3784636).

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

3440540 is a wasteful number, since it uses less digits than its factorization.

3440540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172036 (or 172034 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 20.

The square root of 3440540 is about 1854.8692676305. The cubic root of 3440540 is about 150.9647447772.

Adding to 3440540 its reverse (450443), we get a palindrome (3890983).

The spelling of 3440540 in words is "three million, four hundred forty thousand, five hundred forty".