406011805 has 16 divisors (see below), whose sum is σ = 514635264. Its totient is φ = 307016640.

The previous prime is 406011769. The next prime is 406011839. The reversal of 406011805 is 508110604.

It is not a de Polignac number, because 406011805 - 2¹⁹ = 405487517 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 406011805.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23794 + ... + 37123.

It is an arithmetic number, because the mean of its divisors is an integer number (32164704).

Almost surely, 2^406011805 is an apocalyptic number.

It is an amenable number.

406011805 is a deficient number, since it is larger than the sum of its proper divisors (108623459).

406011805 is a wasteful number, since it uses less digits than its factorization.

406011805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60996.

The product of its (nonzero) digits is 960, while the sum is 25.

The square root of 406011805 is about 20149.7346136370. The cubic root of 406011805 is about 740.4792397254.

The spelling of 406011805 in words is "four hundred six million, eleven thousand, eight hundred five".