6459140 has 24 divisors (see below), whose sum is σ = 13896792. Its totient is φ = 2520320.

The previous prime is 6459121. The next prime is 6459149. The reversal of 6459140 is 419546.

It can be written as a sum of positive squares in 4 ways, for example, as 148996 + 6310144 = 386^2 + 2512^2 .

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (6459149) 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, 3119 + ... + 4758.

It is an arithmetic number, because the mean of its divisors is an integer number (579033).

Almost surely, 2^6459140 is an apocalyptic number.

It is an amenable number.

6459140 is an abundant number, since it is smaller than the sum of its proper divisors (7437652).

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

6459140 is a wasteful number, since it uses less digits than its factorization.

6459140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7927 (or 7925 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 6459140 is about 2541.4838185595. The cubic root of 6459140 is about 186.2336832394.

The spelling of 6459140 in words is "six million, four hundred fifty-nine thousand, one hundred forty".