476816421 has 8 divisors (see below), whose sum is σ = 645244384. Its totient is φ = 313133040.

The previous prime is 476816413. The next prime is 476816479. The reversal of 476816421 is 124618674.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 476816421 - 2³ = 476816413 is a prime.

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 476816421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (476816621) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1185910 + ... + 1186311.

It is an arithmetic number, because the mean of its divisors is an integer number (80655548).

Almost surely, 2^476816421 is an apocalyptic number.

It is an amenable number.

476816421 is a deficient number, since it is larger than the sum of its proper divisors (168427963).

476816421 is a wasteful number, since it uses less digits than its factorization.

476816421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2372291.

The product of its digits is 64512, while the sum is 39.

The square root of 476816421 is about 21836.1265108993. The cubic root of 476816421 is about 781.2386745580.

The spelling of 476816421 in words is "four hundred seventy-six million, eight hundred sixteen thousand, four hundred twenty-one".