474047221 has 2 divisors, whose sum is σ = 474047222. Its totient is φ = 474047220.

The previous prime is 474047209. The next prime is 474047291. The reversal of 474047221 is 122740474.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 349166596 + 124880625 = 18686^2 + 11175^2 .

It is a cyclic number.

It is not a de Polignac number, because 474047221 - 2¹³ = 474039029 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (474047201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 237023610 + 237023611.

It is an arithmetic number, because the mean of its divisors is an integer number (237023611).

Almost surely, 2^474047221 is an apocalyptic number.

It is an amenable number.

474047221 is a deficient number, since it is larger than the sum of its proper divisors (1).

474047221 is an equidigital number, since it uses as much as digits as its factorization.

474047221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12544, while the sum is 31.

The square root of 474047221 is about 21772.6254962510. The cubic root of 474047221 is about 779.7233409583.

Adding to 474047221 its reverse (122740474), we get a palindrome (596787695).

The spelling of 474047221 in words is "four hundred seventy-four million, forty-seven thousand, two hundred twenty-one".