44042004 has 36 divisors (see below), whose sum is σ = 111613684. Its totient is φ = 14643072.

The previous prime is 44042003. The next prime is 44042017. The reversal of 44042004 is 40024044.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 16793604 + 27248400 = 4098^2 + 5220^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44042003) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15114 + ... + 17790.

Almost surely, 2^44042004 is an apocalyptic number.

It is an amenable number.

44042004 is an abundant number, since it is smaller than the sum of its proper divisors (67571680).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

44042004 is a wasteful number, since it uses less digits than its factorization.

44042004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3144 (or 3139 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 18.

The square root of 44042004 is about 6636.4149960653. The cubic root of 44042004 is about 353.1471377669.

Adding to 44042004 its reverse (40024044), we get a palindrome (84066048).

The spelling of 44042004 in words is "forty-four million, forty-two thousand, four", and thus it is an eban number.