479986805 has 4 divisors (see below), whose sum is σ = 575984172. Its totient is φ = 383989440.

The previous prime is 479986783. The next prime is 479986813. The reversal of 479986805 is 508689974.

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 103083409 + 376903396 = 10153^2 + 19414^2 .

It is a de Polignac number, because none of the positive numbers 2^k-479986805 is a prime.

It is a Duffinian number.

It is a Curzon 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, 47998676 + ... + 47998685.

It is an arithmetic number, because the mean of its divisors is an integer number (143996043).

Almost surely, 2^479986805 is an apocalyptic number.

It is an amenable number.

479986805 is a deficient number, since it is larger than the sum of its proper divisors (95997367).

479986805 is an equidigital number, since it uses as much as digits as its factorization.

479986805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95997366.

The product of its (nonzero) digits is 4354560, while the sum is 56.

The square root of 479986805 is about 21908.6011648393. The cubic root of 479986805 is about 782.9663536293.

The spelling of 479986805 in words is "four hundred seventy-nine million, nine hundred eighty-six thousand, eight hundred five".