405461 has 4 divisors (see below), whose sum is σ = 463392. Its totient is φ = 347532.

The previous prime is 405439. The next prime is 405473. The reversal of 405461 is 164504.

It is a happy number.

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 a de Polignac number, because none of the positive numbers 2^k-405461 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 405461.

It is not an unprimeable number, because it can be changed into a prime (405401) 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, 28955 + ... + 28968.

It is an arithmetic number, because the mean of its divisors is an integer number (115848).

2⁴⁰⁵⁴⁶¹ is an apocalyptic number.

It is an amenable number.

405461 is a deficient number, since it is larger than the sum of its proper divisors (57931).

405461 is an equidigital number, since it uses as much as digits as its factorization.

405461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57930.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 405461 is about 636.7581958640. The cubic root of 405461 is about 74.0144237771.

Adding to 405461 its reverse (164504), we get a palindrome (569965).

The spelling of 405461 in words is "four hundred five thousand, four hundred sixty-one".