6407444 has 6 divisors (see below), whose sum is σ = 11213034. Its totient is φ = 3203720.

The previous prime is 6407441. The next prime is 6407449. The reversal of 6407444 is 4447046.

6407444 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 5664400 + 743044 = 2380^2 + 862^2 .

It is a super-2 number, since 2×6407444² = 82110677226272, which contains 22 as substring.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6407441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 800927 + ... + 800934.

It is an arithmetic number, because the mean of its divisors is an integer number (1868839).

Almost surely, 2^6407444 is an apocalyptic number.

It is an amenable number.

6407444 is a deficient number, since it is larger than the sum of its proper divisors (4805590).

6407444 is a wasteful number, since it uses less digits than its factorization.

6407444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1601865 (or 1601863 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 29.

The square root of 6407444 is about 2531.2929502529. The cubic root of 6407444 is about 185.7355087608.

The spelling of 6407444 in words is "six million, four hundred seven thousand, four hundred forty-four".