6140440 has 16 divisors (see below), whose sum is σ = 13816080. Its totient is φ = 2456160.

The previous prime is 6140429. The next prime is 6140441. The reversal of 6140440 is 440416.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6140441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 76716 + ... + 76795.

It is an arithmetic number, because the mean of its divisors is an integer number (863505).

Almost surely, 2^6140440 is an apocalyptic number.

It is an amenable number.

6140440 is an abundant number, since it is smaller than the sum of its proper divisors (7675640).

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

6140440 is a wasteful number, since it uses less digits than its factorization.

6140440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153522 (or 153518 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 6140440 is about 2477.9911218566. The cubic root of 6140440 is about 183.1188971241.

Adding to 6140440 its reverse (440416), we get a palindrome (6580856).

The spelling of 6140440 in words is "six million, one hundred forty thousand, four hundred forty".