416813809 has 4 divisors (see below), whose sum is σ = 417130660. Its totient is φ = 416496960.

The previous prime is 416813777. The next prime is 416813821. The reversal of 416813809 is 908318614.

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 175695025 + 241118784 = 13255^2 + 15528^2 .

It is a cyclic number.

It is not a de Polignac number, because 416813809 - 2⁵ = 416813777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (416813009) by changing a digit.

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, 156444 + ... + 159085.

It is an arithmetic number, because the mean of its divisors is an integer number (104282665).

Almost surely, 2^416813809 is an apocalyptic number.

It is an amenable number.

416813809 is a deficient number, since it is larger than the sum of its proper divisors (316851).

416813809 is a wasteful number, since it uses less digits than its factorization.

416813809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 316850.

The product of its (nonzero) digits is 41472, while the sum is 40.

The square root of 416813809 is about 20416.0184414102. The cubic root of 416813809 is about 746.9887013256.

The spelling of 416813809 in words is "four hundred sixteen million, eight hundred thirteen thousand, eight hundred nine".