476876809 has 4 divisors (see below), whose sum is σ = 504928404. Its totient is φ = 448825216.

The previous prime is 476876789. The next prime is 476876849. The reversal of 476876809 is 908678674.

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 153884025 + 322992784 = 12405^2 + 17972^2 .

It is a cyclic number.

It is not a de Polignac number, because 476876809 - 2⁷ = 476876681 is a prime.

It is a super-2 number, since 2×476876809² = 454822981924044962, which contains 22 as substring.

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 476876809.

It is not an unprimeable number, because it can be changed into a prime (476876849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14025772 + ... + 14025805.

It is an arithmetic number, because the mean of its divisors is an integer number (126232101).

Almost surely, 2^476876809 is an apocalyptic number.

It is an amenable number.

476876809 is a deficient number, since it is larger than the sum of its proper divisors (28051595).

476876809 is a wasteful number, since it uses less digits than its factorization.

476876809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28051594.

The product of its (nonzero) digits is 4064256, while the sum is 55.

The square root of 476876809 is about 21837.5092215207. The cubic root of 476876809 is about 781.2716540217.

The spelling of 476876809 in words is "four hundred seventy-six million, eight hundred seventy-six thousand, eight hundred nine".