1006444 has 6 divisors (see below), whose sum is σ = 1761284. Its totient is φ = 503220.

The previous prime is 1006441. The next prime is 1006463. The reversal of 1006444 is 4446001.

It is not an unprimeable number, because it can be changed into a prime (1006441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 125802 + ... + 125809.

2^1006444 is an apocalyptic number.

It is an amenable number.

1006444 is a deficient number, since it is larger than the sum of its proper divisors (754840).

1006444 is a wasteful number, since it uses less digits than its factorization.

1006444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251615 (or 251613 counting only the distinct ones).

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

The square root of 1006444 is about 1003.2168260152. The cubic root of 1006444 is about 100.2143402543.

The spelling of 1006444 in words is "one million, six thousand, four hundred forty-four".