408369 has 16 divisors (see below), whose sum is σ = 604352. Its totient is φ = 243648.

The previous prime is 408361. The next prime is 408379. The reversal of 408369 is 963804.

It is not a de Polignac number, because 408369 - 2³ = 408361 is a prime.

It is a super-2 number, since 2×408369² = 333530480322, which contains 22 as substring.

It is a Smith number, since the sum of its digits (30) 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 not an unprimeable number, because it can be changed into a prime (408361) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1302 + ... + 1584.

It is an arithmetic number, because the mean of its divisors is an integer number (37772).

2⁴⁰⁸³⁶⁹ is an apocalyptic number.

It is an amenable number.

408369 is a deficient number, since it is larger than the sum of its proper divisors (195983).

408369 is a wasteful number, since it uses less digits than its factorization.

408369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336.

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 408369 is about 639.0375575817. The cubic root of 408369 is about 74.1909482980.

It can be divided in two parts, 408 and 369, that added together give a palindrome (777).

The spelling of 408369 in words is "four hundred eight thousand, three hundred sixty-nine".