475799821 has 8 divisors (see below), whose sum is σ = 543920000. Its totient is φ = 407716848.

The previous prime is 475799809. The next prime is 475799837. The reversal of 475799821 is 128997574.

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

It is not a de Polignac number, because 475799821 - 2⁹ = 475799309 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 (475799861) 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, 28195 + ... + 41791.

It is an arithmetic number, because the mean of its divisors is an integer number (67990000).

Almost surely, 2^475799821 is an apocalyptic number.

It is an amenable number.

475799821 is a deficient number, since it is larger than the sum of its proper divisors (68120179).

475799821 is a wasteful number, since it uses less digits than its factorization.

475799821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18603.

The product of its digits is 1270080, while the sum is 52.

The square root of 475799821 is about 21812.8361521376. The cubic root of 475799821 is about 780.6830642623.

The spelling of 475799821 in words is "four hundred seventy-five million, seven hundred ninety-nine thousand, eight hundred twenty-one".