471769021 has 2 divisors, whose sum is σ = 471769022. Its totient is φ = 471769020.

The previous prime is 471768991. The next prime is 471769061. The reversal of 471769021 is 120967174.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 384552100 + 87216921 = 19610^2 + 9339^2 .

It is a cyclic number.

It is not a de Polignac number, because 471769021 - 2¹⁵ = 471736253 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (471769061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 235884510 + 235884511.

It is an arithmetic number, because the mean of its divisors is an integer number (235884511).

Almost surely, 2^471769021 is an apocalyptic number.

It is an amenable number.

471769021 is a deficient number, since it is larger than the sum of its proper divisors (1).

471769021 is an equidigital number, since it uses as much as digits as its factorization.

471769021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21168, while the sum is 37.

The square root of 471769021 is about 21720.2444967823. The cubic root of 471769021 is about 778.4722567428.

The spelling of 471769021 in words is "four hundred seventy-one million, seven hundred sixty-nine thousand, twenty-one".