405593 has 4 divisors (see below), whose sum is σ = 426960. Its totient is φ = 384228.

The previous prime is 405577. The next prime is 405599. The reversal of 405593 is 395504.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 405593 - 2⁴ = 405577 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 405593.

It is not an unprimeable number, because it can be changed into a prime (405599) 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, 10655 + ... + 10692.

It is an arithmetic number, because the mean of its divisors is an integer number (106740).

2⁴⁰⁵⁵⁹³ is an apocalyptic number.

It is an amenable number.

405593 is a deficient number, since it is larger than the sum of its proper divisors (21367).

405593 is a wasteful number, since it uses less digits than its factorization.

405593 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21366.

The product of its (nonzero) digits is 2700, while the sum is 26.

The square root of 405593 is about 636.8618374499. The cubic root of 405593 is about 74.0224548364.

The spelling of 405593 in words is "four hundred five thousand, five hundred ninety-three".