416806813 has 4 divisors (see below), whose sum is σ = 428071900. Its totient is φ = 405541728.

The previous prime is 416806771. The next prime is 416806823. The reversal of 416806813 is 318608614.

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 355058649 + 61748164 = 18843^2 + 7858^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-416806813 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37), and also a Moran number because the ratio is a prime number: 11265049 = 416806813 / (4 + 1 + 6 + 8 + 0 + 6 + 8 + 1 + 3).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (416806823) 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, 5632488 + ... + 5632561.

It is an arithmetic number, because the mean of its divisors is an integer number (107017975).

Almost surely, 2^416806813 is an apocalyptic number.

It is an amenable number.

416806813 is a deficient number, since it is larger than the sum of its proper divisors (11265087).

416806813 is a wasteful number, since it uses less digits than its factorization.

416806813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11265086.

The product of its (nonzero) digits is 27648, while the sum is 37.

The square root of 416806813 is about 20415.8471046391. The cubic root of 416806813 is about 746.9845220317.

The spelling of 416806813 in words is "four hundred sixteen million, eight hundred six thousand, eight hundred thirteen".