408543943 has 4 divisors (see below), whose sum is σ = 408584520. Its totient is φ = 408503368.

The previous prime is 408543859. The next prime is 408543953. The reversal of 408543943 is 349345804.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 408543943 - 2⁹ = 408543431 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 408543896 and 408543905.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (408543953) 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, 7521 + ... + 29557.

It is an arithmetic number, because the mean of its divisors is an integer number (102146130).

Almost surely, 2^408543943 is an apocalyptic number.

408543943 is a deficient number, since it is larger than the sum of its proper divisors (40577).

408543943 is a wasteful number, since it uses less digits than its factorization.

408543943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40576.

The product of its (nonzero) digits is 207360, while the sum is 40.

The square root of 408543943 is about 20212.4699876091. The cubic root of 408543943 is about 742.0154111489.

The spelling of 408543943 in words is "four hundred eight million, five hundred forty-three thousand, nine hundred forty-three".