6393444 has 24 divisors (see below), whose sum is σ = 15029280. Its totient is φ = 2115264.

The previous prime is 6393433. The next prime is 6393449. The reversal of 6393444 is 4443936.

It is a super-2 number, since 2×6393444² = 81752252362272, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (6393449) 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, 249 + ... + 3584.

It is an arithmetic number, because the mean of its divisors is an integer number (626220).

Almost surely, 2^6393444 is an apocalyptic number.

It is an amenable number.

6393444 is an abundant number, since it is smaller than the sum of its proper divisors (8635836).

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

6393444 is a wasteful number, since it uses less digits than its factorization.

6393444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3979 (or 3977 counting only the distinct ones).

The product of its digits is 31104, while the sum is 33.

The square root of 6393444 is about 2528.5260528616. The cubic root of 6393444 is about 185.6001353175.

The spelling of 6393444 in words is "six million, three hundred ninety-three thousand, four hundred forty-four".