405459 has 8 divisors (see below), whose sum is σ = 600720. Its totient is φ = 270288.

The previous prime is 405439. The next prime is 405473. The reversal of 405459 is 954504.

It is a de Polignac number, because none of the positive numbers 2^k-405459 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 15017 = 405459 / (4 + 0 + 5 + 4 + 5 + 9).

It is not an unprimeable number, because it can be changed into a prime (405439) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7482 + ... + 7535.

It is an arithmetic number, because the mean of its divisors is an integer number (75090).

2⁴⁰⁵⁴⁵⁹ is an apocalyptic number.

405459 is a deficient number, since it is larger than the sum of its proper divisors (195261).

405459 is a wasteful number, since it uses less digits than its factorization.

405459 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15026 (or 15020 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 405459 is about 636.7566254072. The cubic root of 405459 is about 74.0143020810.

The spelling of 405459 in words is "four hundred five thousand, four hundred fifty-nine".