471418021 has 2 divisors, whose sum is σ = 471418022. Its totient is φ = 471418020.

The previous prime is 471418009. The next prime is 471418049. The reversal of 471418021 is 120814174.

It is an a-pointer prime, because the next prime (471418049) can be obtained adding 471418021 to its sum of digits (28).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 459244900 + 12173121 = 21430^2 + 3489^2 .

It is a cyclic number.

It is not a de Polignac number, because 471418021 - 2⁹ = 471417509 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (471418001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 235709010 + 235709011.

It is an arithmetic number, because the mean of its divisors is an integer number (235709011).

Almost surely, 2^471418021 is an apocalyptic number.

It is an amenable number.

471418021 is a deficient number, since it is larger than the sum of its proper divisors (1).

471418021 is an equidigital number, since it uses as much as digits as its factorization.

471418021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1792, while the sum is 28.

The square root of 471418021 is about 21712.1629737804. The cubic root of 471418021 is about 778.2791456064.

The spelling of 471418021 in words is "four hundred seventy-one million, four hundred eighteen thousand, twenty-one".