438042004 has 6 divisors (see below), whose sum is σ = 766573514. Its totient is φ = 219021000.

The previous prime is 438041993. The next prime is 438042023. The reversal of 438042004 is 400240834.

It can be written as a sum of positive squares in only one way, i.e., 430479504 + 7562500 = 20748^2 + 2750^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 438042004.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54755247 + ... + 54755254.

Almost surely, 2^438042004 is an apocalyptic number.

It is an amenable number.

438042004 is a deficient number, since it is larger than the sum of its proper divisors (328531510).

438042004 is a wasteful number, since it uses less digits than its factorization.

438042004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109510505 (or 109510503 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 25.

The square root of 438042004 is about 20929.4530267754. The cubic root of 438042004 is about 759.4606075740.

Adding to 438042004 its reverse (400240834), we get a palindrome (838282838).

The spelling of 438042004 in words is "four hundred thirty-eight million, forty-two thousand, four".