3140440 has 16 divisors (see below), whose sum is σ = 7066080. Its totient is φ = 1256160.

The previous prime is 3140437. The next prime is 3140441. The reversal of 3140440 is 440413.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3140441) 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, 39216 + ... + 39295.

It is an arithmetic number, because the mean of its divisors is an integer number (441630).

Almost surely, 2^3140440 is an apocalyptic number.

It is an amenable number.

3140440 is an abundant number, since it is smaller than the sum of its proper divisors (3925640).

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

3140440 is a wasteful number, since it uses less digits than its factorization.

3140440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78522 (or 78518 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 3140440 is about 1772.1286635005. The cubic root of 3140440 is about 146.4412745558.

Adding to 3140440 its reverse (440413), we get a palindrome (3580853).

The spelling of 3140440 in words is "three million, one hundred forty thousand, four hundred forty".