4573339621 has 2 divisors, whose sum is σ = 4573339622. Its totient is φ = 4573339620.

The previous prime is 4573339613. The next prime is 4573339651. The reversal of 4573339621 is 1269333754.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4168122721 + 405216900 = 64561^2 + 20130^2 .

It is a cyclic number.

It is not a de Polignac number, because 4573339621 - 2³ = 4573339613 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4573339651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2286669810 + 2286669811.

It is an arithmetic number, because the mean of its divisors is an integer number (2286669811).

Almost surely, 2^4573339621 is an apocalyptic number.

It is an amenable number.

4573339621 is a deficient number, since it is larger than the sum of its proper divisors (1).

4573339621 is an equidigital number, since it uses as much as digits as its factorization.

4573339621 is an evil number, because the sum of its binary digits is even.

The product of its digits is 408240, while the sum is 43.

The square root of 4573339621 is about 67626.4713037728. The cubic root of 4573339621 is about 1659.8843027943.

The spelling of 4573339621 in words is "four billion, five hundred seventy-three million, three hundred thirty-nine thousand, six hundred twenty-one".