471929921 has 2 divisors, whose sum is σ = 471929922. Its totient is φ = 471929920.

The previous prime is 471929897. The next prime is 471929993. The reversal of 471929921 is 129929174.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 268468225 + 203461696 = 16385^2 + 14264^2 .

It is a cyclic number.

It is not a de Polignac number, because 471929921 - 2²⁶ = 404821057 is a prime.

It is not a weakly prime, because it can be changed into another prime (471929221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 235964960 + 235964961.

It is an arithmetic number, because the mean of its divisors is an integer number (235964961).

Almost surely, 2^471929921 is an apocalyptic number.

It is an amenable number.

471929921 is a deficient number, since it is larger than the sum of its proper divisors (1).

471929921 is an equidigital number, since it uses as much as digits as its factorization.

471929921 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 81648, while the sum is 44.

The square root of 471929921 is about 21723.9480988148. The cubic root of 471929921 is about 778.5607477511.

The spelling of 471929921 in words is "four hundred seventy-one million, nine hundred twenty-nine thousand, nine hundred twenty-one".