1002443444 has 6 divisors (see below), whose sum is σ = 1754276034. Its totient is φ = 501221720.

The previous prime is 1002443441. The next prime is 1002443473. The reversal of 1002443444 is 4443442001.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 889828900 + 112614544 = 29830^2 + 10612^2 .

It is a super-2 number, since 2×1002443444² = 2009785716837162272, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1002443441) 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, 125305427 + ... + 125305434.

It is an arithmetic number, because the mean of its divisors is an integer number (292379339).

Almost surely, 2^1002443444 is an apocalyptic number.

It is an amenable number.

1002443444 is a deficient number, since it is larger than the sum of its proper divisors (751832590).

1002443444 is a wasteful number, since it uses less digits than its factorization.

1002443444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250610865 (or 250610863 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 26.

The square root of 1002443444 is about 31661.3872721964. The cubic root of 1002443444 is about 1000.8138188525.

Adding to 1002443444 its reverse (4443442001), we get a palindrome (5445885445).

The spelling of 1002443444 in words is "one billion, two million, four hundred forty-three thousand, four hundred forty-four".