479842021 has 2 divisors, whose sum is σ = 479842022. Its totient is φ = 479842020.

The previous prime is 479842009. The next prime is 479842037. The reversal of 479842021 is 120248974.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 479829025 + 12996 = 21905^2 + 114^2 .

It is a cyclic number.

It is not a de Polignac number, because 479842021 - 2¹¹ = 479839973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (479846021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 239921010 + 239921011.

It is an arithmetic number, because the mean of its divisors is an integer number (239921011).

Almost surely, 2^479842021 is an apocalyptic number.

It is an amenable number.

479842021 is a deficient number, since it is larger than the sum of its proper divisors (1).

479842021 is an equidigital number, since it uses as much as digits as its factorization.

479842021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32256, while the sum is 37.

The square root of 479842021 is about 21905.2966425931. The cubic root of 479842021 is about 782.8876206313.

It can be divided in two parts, 47984 and 2021, that added together give a palindrome (50005).

The spelling of 479842021 in words is "four hundred seventy-nine million, eight hundred forty-two thousand, twenty-one".