6440452 has 12 divisors (see below), whose sum is σ = 11346496. Its totient is φ = 3198600.

The previous prime is 6440443. The next prime is 6440453. The reversal of 6440452 is 2540446.

It is a hoax number, since the sum of its digits (25) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (6440453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4728 + ... + 5935.

Almost surely, 2^6440452 is an apocalyptic number.

It is an amenable number.

6440452 is a deficient number, since it is larger than the sum of its proper divisors (4906044).

6440452 is a wasteful number, since it uses less digits than its factorization.

6440452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10818 (or 10816 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 6440452 is about 2537.8045630032. The cubic root of 6440452 is about 186.0539019792.

Adding to 6440452 its reverse (2540446), we get a palindrome (8980898).

The spelling of 6440452 in words is "six million, four hundred forty thousand, four hundred fifty-two".