408407 has 4 divisors (see below), whose sum is σ = 422520. Its totient is φ = 394296.

The previous prime is 408403. The next prime is 408413. The reversal of 408407 is 704804.

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 408407 - 2² = 408403 is a prime.

It is a Duffinian 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 408407.

It is not an unprimeable number, because it can be changed into a prime (408403) 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, 7013 + ... + 7070.

It is an arithmetic number, because the mean of its divisors is an integer number (105630).

2⁴⁰⁸⁴⁰⁷ is an apocalyptic number.

408407 is a deficient number, since it is larger than the sum of its proper divisors (14113).

408407 is a wasteful number, since it uses less digits than its factorization.

408407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14112.

The product of its (nonzero) digits is 896, while the sum is 23.

The square root of 408407 is about 639.0672891019. The cubic root of 408407 is about 74.1932494591.

The spelling of 408407 in words is "four hundred eight thousand, four hundred seven".