4471487021 has 2 divisors, whose sum is σ = 4471487022. Its totient is φ = 4471487020.

The previous prime is 4471486973. The next prime is 4471487029. The reversal of 4471487021 is 1207841744.

4471487021 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3346622500 + 1124864521 = 57850^2 + 33539^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4471487021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4471487029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2235743510 + 2235743511.

It is an arithmetic number, because the mean of its divisors is an integer number (2235743511).

Almost surely, 2^4471487021 is an apocalyptic number.

It is an amenable number.

4471487021 is a deficient number, since it is larger than the sum of its proper divisors (1).

4471487021 is an equidigital number, since it uses as much as digits as its factorization.

4471487021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 50176, while the sum is 38.

The square root of 4471487021 is about 66869.1784082921. The cubic root of 4471487021 is about 1647.4692788108.

The spelling of 4471487021 in words is "four billion, four hundred seventy-one million, four hundred eighty-seven thousand, twenty-one".