408239 has 8 divisors (see below), whose sum is σ = 454272. Its totient is φ = 364320.

The previous prime is 408229. The next prime is 408241. The reversal of 408239 is 932804.

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

It is a cyclic number.

It is not a de Polignac number, because 408239 - 2⁴ = 408223 is a prime.

It is a super-2 number, since 2×408239² = 333318162242, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (408209) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 104 + ... + 909.

It is an arithmetic number, because the mean of its divisors is an integer number (56784).

2⁴⁰⁸²³⁹ is an apocalyptic number.

408239 is a deficient number, since it is larger than the sum of its proper divisors (46033).

408239 is a wasteful number, since it uses less digits than its factorization.

408239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1057.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 408239 is about 638.9358340240. The cubic root of 408239 is about 74.1830748250.

The spelling of 408239 in words is "four hundred eight thousand, two hundred thirty-nine".