1438004 has 6 divisors (see below), whose sum is σ = 2516514. Its totient is φ = 719000.

The previous prime is 1438001. The next prime is 1438009. The reversal of 1438004 is 4008341.

It can be written as a sum of positive squares in only one way, i.e., 1416100 + 21904 = 1190^2 + 148^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1438001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 179747 + ... + 179754.

It is an arithmetic number, because the mean of its divisors is an integer number (419419).

2^1438004 is an apocalyptic number.

It is an amenable number.

1438004 is a deficient number, since it is larger than the sum of its proper divisors (1078510).

1438004 is a wasteful number, since it uses less digits than its factorization.

1438004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 359505 (or 359503 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 1438004 is about 1199.1680449378. The cubic root of 1438004 is about 112.8721241204.

The spelling of 1438004 in words is "one million, four hundred thirty-eight thousand, four".