408269 has 4 divisors (see below), whose sum is σ = 411996. Its totient is φ = 404544.

The previous prime is 408263. The next prime is 408271. The reversal of 408269 is 962804.

408269 = T₂₂ + T₂₃ + ... + T₁₃₄.

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

It can be written as a sum of positive squares in 2 ways, for example, as 2500 + 405769 = 50^2 + 637^2 .

It is a cyclic number.

It is not a de Polignac number, because 408269 - 2¹⁶ = 342733 is a prime.

It is a super-2 number, since 2×408269² = 333367152722, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 408269.

It is not an unprimeable number, because it can be changed into a prime (408263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1694 + ... + 1919.

It is an arithmetic number, because the mean of its divisors is an integer number (102999).

2⁴⁰⁸²⁶⁹ is an apocalyptic number.

It is an amenable number.

408269 is a deficient number, since it is larger than the sum of its proper divisors (3727).

408269 is a wasteful number, since it uses less digits than its factorization.

408269 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3726.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 408269 is about 638.9593101286. The cubic root of 408269 is about 74.1848919286.

The spelling of 408269 in words is "four hundred eight thousand, two hundred sixty-nine".