406965605 has 4 divisors (see below), whose sum is σ = 488358732. Its totient is φ = 325572480.

The previous prime is 406965593. The next prime is 406965623. The reversal of 406965605 is 506569604.

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 119290084 + 287675521 = 10922^2 + 16961^2 .

It is not a de Polignac number, because 406965605 - 2²⁸ = 138530149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40696556 + ... + 40696565.

It is an arithmetic number, because the mean of its divisors is an integer number (122089683).

Almost surely, 2^406965605 is an apocalyptic number.

It is an amenable number.

406965605 is a deficient number, since it is larger than the sum of its proper divisors (81393127).

406965605 is an equidigital number, since it uses as much as digits as its factorization.

406965605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81393126.

The product of its (nonzero) digits is 194400, while the sum is 41.

The square root of 406965605 is about 20173.3885353948. The cubic root of 406965605 is about 741.0586290903.

The spelling of 406965605 in words is "four hundred six million, nine hundred sixty-five thousand, six hundred five".