405303 has 4 divisors (see below), whose sum is σ = 540408. Its totient is φ = 270200.

The previous prime is 405299. The next prime is 405323. The reversal of 405303 is 303504.

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 405303 - 2² = 405299 is a prime.

It is a D-number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (405323) 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, 67548 + ... + 67553.

It is an arithmetic number, because the mean of its divisors is an integer number (135102).

2⁴⁰⁵³⁰³ is an apocalyptic number.

405303 is a deficient number, since it is larger than the sum of its proper divisors (135105).

405303 is a wasteful number, since it uses less digits than its factorization.

405303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135104.

The product of its (nonzero) digits is 180, while the sum is 15.

The square root of 405303 is about 636.6341178416. The cubic root of 405303 is about 74.0048085504.

Adding to 405303 its reverse (303504), we get a palindrome (708807).

The spelling of 405303 in words is "four hundred five thousand, three hundred three".