405599 has 2 divisors, whose sum is σ = 405600. Its totient is φ = 405598.

The previous prime is 405577. The next prime is 405607. The reversal of 405599 is 995504.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 405599 - 2⁸ = 405343 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a plaindrome in base 13.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (405529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202799 + 202800.

It is an arithmetic number, because the mean of its divisors is an integer number (202800).

2⁴⁰⁵⁵⁹⁹ is an apocalyptic number.

405599 is a deficient number, since it is larger than the sum of its proper divisors (1).

405599 is an equidigital number, since it uses as much as digits as its factorization.

405599 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8100, while the sum is 32.

The square root of 405599 is about 636.8665480303. The cubic root of 405599 is about 74.0228198431.

The spelling of 405599 in words is "four hundred five thousand, five hundred ninety-nine".