408039 has 4 divisors (see below), whose sum is σ = 544056. Its totient is φ = 272024.

The previous prime is 408019. The next prime is 408041. The reversal of 408039 is 930804.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 408039 - 2⁸ = 407783 is a prime.

It is a D-number.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (408019) 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, 68004 + ... + 68009.

It is an arithmetic number, because the mean of its divisors is an integer number (136014).

2⁴⁰⁸⁰³⁹ is an apocalyptic number.

408039 is a deficient number, since it is larger than the sum of its proper divisors (136017).

408039 is a wasteful number, since it uses less digits than its factorization.

408039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136016.

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 408039 is about 638.7793046115. The cubic root of 408039 is about 74.1709585251.

The spelling of 408039 in words is "four hundred eight thousand, thirty-nine".