406466405 has 4 divisors (see below), whose sum is σ = 487759692. Its totient is φ = 325173120.

The previous prime is 406466383. The next prime is 406466429. The reversal of 406466405 is 504664604.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 145902241 + 260564164 = 12079^2 + 16142^2 .

It is a de Polignac number, because none of the positive numbers 2^k-406466405 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40646636 + ... + 40646645.

It is an arithmetic number, because the mean of its divisors is an integer number (121939923).

Almost surely, 2^406466405 is an apocalyptic number.

It is an amenable number.

406466405 is a deficient number, since it is larger than the sum of its proper divisors (81293287).

406466405 is an equidigital number, since it uses as much as digits as its factorization.

406466405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81293286.

The product of its (nonzero) digits is 69120, while the sum is 35.

The square root of 406466405 is about 20161.0120033693. The cubic root of 406466405 is about 740.7555012372.

The spelling of 406466405 in words is "four hundred six million, four hundred sixty-six thousand, four hundred five".