43406 has 8 divisors (see below), whose sum is σ = 71064. Its totient is φ = 19720.

The previous prime is 43403. The next prime is 43411. The reversal of 43406 is 60434.

43406 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a Curzon number.

It is a plaindrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43403) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 965 + ... + 1008.

It is an arithmetic number, because the mean of its divisors is an integer number (8883).

2⁴³⁴⁰⁶ is an apocalyptic number.

43406 is a deficient number, since it is larger than the sum of its proper divisors (27658).

43406 is a wasteful number, since it uses less digits than its factorization.

43406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1986.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 43406 is about 208.3410665231. The cubic root of 43406 is about 35.1438973722.

The spelling of 43406 in words is "forty-three thousand, four hundred six".