1438441 has 4 divisors (see below), whose sum is σ = 1462084. Its totient is φ = 1414800.

The previous prime is 1438417. The next prime is 1438447. The reversal of 1438441 is 1448341.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1448341 = 263 ⋅5507.

It can be written as a sum of positive squares in 2 ways, for example, as 184041 + 1254400 = 429^2 + 1120^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1438441 is a prime.

It is a super-2 number, since 2×1438441² = 4138225020962, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1438447) 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 in 3 ways as a sum of consecutive naturals, for example, 11730 + ... + 11851.

It is an arithmetic number, because the mean of its divisors is an integer number (365521).

2^1438441 is an apocalyptic number.

It is an amenable number.

1438441 is a deficient number, since it is larger than the sum of its proper divisors (23643).

1438441 is an equidigital number, since it uses as much as digits as its factorization.

1438441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23642.

The product of its digits is 1536, while the sum is 25.

The square root of 1438441 is about 1199.3502407554. The cubic root of 1438441 is about 112.8835566622.

The spelling of 1438441 in words is "one million, four hundred thirty-eight thousand, four hundred forty-one".