43438 has 8 divisors (see below), whose sum is σ = 67032. Its totient is φ = 21096.

The previous prime is 43427. The next prime is 43441. The reversal of 43438 is 83434.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an Ulam number.

It is a d-powerful number, because it can be written as 4 + 3² + 4⁶ + 3⁸ + 8⁵ .

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is an unprimeable number.

43438 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 220 + ... + 367.

It is an arithmetic number, because the mean of its divisors is an integer number (8379).

2⁴³⁴³⁸ is an apocalyptic number.

43438 is a deficient number, since it is larger than the sum of its proper divisors (23594).

43438 is a wasteful number, since it uses less digits than its factorization.

43438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 626.

The product of its digits is 1152, while the sum is 22.

The square root of 43438 is about 208.4178495235. The cubic root of 43438 is about 35.1525315738.

The spelling of 43438 in words is "forty-three thousand, four hundred thirty-eight".