474671221 has 4 divisors (see below), whose sum is σ = 475944172. Its totient is φ = 473398272.

The previous prime is 474671207. The next prime is 474671257. The reversal of 474671221 is 122176474.

It is a happy number.

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 204890596 + 269780625 = 14314^2 + 16425^2 .

It is a cyclic number.

It is not a de Polignac number, because 474671221 - 2²⁵ = 441116789 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 (474671201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 635916 + ... + 636661.

It is an arithmetic number, because the mean of its divisors is an integer number (118986043).

Almost surely, 2^474671221 is an apocalyptic number.

It is an amenable number.

474671221 is a deficient number, since it is larger than the sum of its proper divisors (1272951).

474671221 is a wasteful number, since it uses less digits than its factorization.

474671221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1272950.

The product of its digits is 18816, while the sum is 34.

The square root of 474671221 is about 21786.9507044928. The cubic root of 474671221 is about 780.0653139478.

The spelling of 474671221 in words is "four hundred seventy-four million, six hundred seventy-one thousand, two hundred twenty-one".