11438 has 16 divisors (see below), whose sum is σ = 21120. Its totient is φ = 4536.

The previous prime is 11437. The next prime is 11443. The reversal of 11438 is 83411.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11437) 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, 245 + ... + 287.

It is an arithmetic number, because the mean of its divisors is an integer number (1320).

2¹¹⁴³⁸ is an apocalyptic number.

11438 is a deficient number, since it is larger than the sum of its proper divisors (9682).

11438 is a wasteful number, since it uses less digits than its factorization.

11438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71.

The product of its digits is 96, while the sum is 17.

The square root of 11438 is about 106.9485857784. The cubic root of 11438 is about 22.5311502695.

Adding to 11438 its reverse (83411), we get a palindrome (94849).

The spelling of 11438 in words is "eleven thousand, four hundred thirty-eight".