476807213 has 4 divisors (see below), whose sum is σ = 477200220. Its totient is φ = 476414208.

The previous prime is 476807189. The next prime is 476807231. The reversal of 476807213 is 312708674.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 312708674 = 2 ⋅156354337.

It can be written as a sum of positive squares in 2 ways, for example, as 123254404 + 353552809 = 11102^2 + 18803^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-476807213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (476804213) 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, 194678 + ... + 197111.

It is an arithmetic number, because the mean of its divisors is an integer number (119300055).

Almost surely, 2^476807213 is an apocalyptic number.

It is an amenable number.

476807213 is a deficient number, since it is larger than the sum of its proper divisors (393007).

476807213 is a wasteful number, since it uses less digits than its factorization.

476807213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 393006.

The product of its (nonzero) digits is 56448, while the sum is 38.

The square root of 476807213 is about 21835.9156666259. The cubic root of 476807213 is about 781.2336455840.

The spelling of 476807213 in words is "four hundred seventy-six million, eight hundred seven thousand, two hundred thirteen".