408431 has 2 divisors, whose sum is σ = 408432. Its totient is φ = 408430.

The previous prime is 408427. The next prime is 408433. The reversal of 408431 is 134804.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 408431 - 2² = 408427 is a prime.

It is a super-2 number, since 2×408431² = 333631763522, which contains 22 as substring.

Together with 408433, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (408433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 204215 + 204216.

It is an arithmetic number, because the mean of its divisors is an integer number (204216).

2⁴⁰⁸⁴³¹ is an apocalyptic number.

408431 is a deficient number, since it is larger than the sum of its proper divisors (1).

408431 is an equidigital number, since it uses as much as digits as its factorization.

408431 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 408431 is about 639.0860661914. The cubic root of 408431 is about 74.1947027505.

The spelling of 408431 in words is "four hundred eight thousand, four hundred thirty-one".