1004423444 has 24 divisors (see below), whose sum is σ = 1862676648. Its totient is φ = 472279040.

The previous prime is 1004423419. The next prime is 1004423449. The reversal of 1004423444 is 4443244001.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 137827600 + 866595844 = 11740^2 + 29438^2 .

It is a super-2 number, since 2×1004423444² = 2017732909713642272, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1004423449) 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, 87122 + ... + 97974.

It is an arithmetic number, because the mean of its divisors is an integer number (77611527).

Almost surely, 2^1004423444 is an apocalyptic number.

It is an amenable number.

1004423444 is a deficient number, since it is larger than the sum of its proper divisors (858253204).

1004423444 is a wasteful number, since it uses less digits than its factorization.

1004423444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12235 (or 12233 counting only the distinct ones).

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

The square root of 1004423444 is about 31692.6402181958. The cubic root of 1004423444 is about 1001.4723125652.

Adding to 1004423444 its reverse (4443244001), we get a palindrome (5447667445).

The spelling of 1004423444 in words is "one billion, four million, four hundred twenty-three thousand, four hundred forty-four".