4009444 has 6 divisors (see below), whose sum is σ = 7016534. Its totient is φ = 2004720.

The previous prime is 4009417. The next prime is 4009451. The reversal of 4009444 is 4449004.

It can be written as a sum of positive squares in only one way, i.e., 3849444 + 160000 = 1962^2 + 400^2 .

It is an Ulam number.

It is an unprimeable number.

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, 501177 + ... + 501184.

Almost surely, 2^4009444 is an apocalyptic number.

It is an amenable number.

4009444 is a deficient number, since it is larger than the sum of its proper divisors (3007090).

4009444 is a wasteful number, since it uses less digits than its factorization.

4009444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1002365 (or 1002363 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 4009444 is about 2002.3596080624. The cubic root of 4009444 is about 158.8649354697.

The spelling of 4009444 in words is "four million, nine thousand, four hundred forty-four".