405354 has 8 divisors (see below), whose sum is σ = 810720. Its totient is φ = 135116.

The previous prime is 405347. The next prime is 405373. The reversal of 405354 is 453504.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

405354 is an admirable number.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 405354.

It is an unprimeable number.

405354 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33774 + ... + 33785.

It is an arithmetic number, because the mean of its divisors is an integer number (101340).

2⁴⁰⁵³⁵⁴ is an apocalyptic number.

405354 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

405354 is a wasteful number, since it uses less digits than its factorization.

405354 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67564.

The product of its (nonzero) digits is 1200, while the sum is 21.

The square root of 405354 is about 636.6741709854. The cubic root of 405354 is about 74.0079124727.

Adding to 405354 its reverse (453504), we get a palindrome (858858).

The spelling of 405354 in words is "four hundred five thousand, three hundred fifty-four".