43408 has 10 divisors (see below), whose sum is σ = 84134.
Its totient is φ = 21696.
The previous prime is 43403. The next prime is 43411. The reversal of 43408 is 80434.
It can be written as a sum of positive squares in only one way, i.e., 43264 + 144 = 208^2 + 12^2
It is a plaindrome in base 15.
It is a nialpdrome in base 16.
It is a zygodrome in base 15.
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 as a sum of consecutive naturals, namely, 1341 + ... + 1372.
243408 is an apocalyptic number.
It is an amenable number.
43408 is a deficient number, since it is larger than the sum of its proper divisors (40726).
43408 is a wasteful number, since it uses less digits than its factorization.
43408 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 2721 (or 2715 counting only the distinct ones).
The product of its (nonzero) digits is 384, while the sum is 19.
The square root of 43408 is about 208.3458662897.
The cubic root of 43408 is about 35.1444371341.
The spelling of 43408 in words is "forty-three thousand, four hundred eight".