474238221 has 4 divisors (see below), whose sum is σ = 632317632. Its totient is φ = 316158812.

The previous prime is 474238207. The next prime is 474238229. The reversal of 474238221 is 122832474.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 474238221 - 2¹⁴ = 474221837 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (474238229) 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, 79039701 + ... + 79039706.

It is an arithmetic number, because the mean of its divisors is an integer number (158079408).

Almost surely, 2^474238221 is an apocalyptic number.

It is an amenable number.

474238221 is a deficient number, since it is larger than the sum of its proper divisors (158079411).

474238221 is a wasteful number, since it uses less digits than its factorization.

474238221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158079410.

The product of its digits is 21504, while the sum is 33.

The square root of 474238221 is about 21777.0112963189. The cubic root of 474238221 is about 779.8280472368.

The spelling of 474238221 in words is "four hundred seventy-four million, two hundred thirty-eight thousand, two hundred twenty-one".