4258943621 has 2 divisors, whose sum is σ = 4258943622. Its totient is φ = 4258943620.

The previous prime is 4258943609. The next prime is 4258943629. The reversal of 4258943621 is 1263498524.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4168122721 + 90820900 = 64561^2 + 9530^2 .

It is a cyclic number.

It is not a de Polignac number, because 4258943621 - 2¹⁸ = 4258681477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4258943629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2129471810 + 2129471811.

It is an arithmetic number, because the mean of its divisors is an integer number (2129471811).

Almost surely, 2^4258943621 is an apocalyptic number.

It is an amenable number.

4258943621 is a deficient number, since it is larger than the sum of its proper divisors (1).

4258943621 is an equidigital number, since it uses as much as digits as its factorization.

4258943621 is an evil number, because the sum of its binary digits is even.

The product of its digits is 414720, while the sum is 44.

The square root of 4258943621 is about 65260.5824445354. The cubic root of 4258943621 is about 1620.9413343583.

The spelling of 4258943621 in words is "four billion, two hundred fifty-eight million, nine hundred forty-three thousand, six hundred twenty-one".