4323454621 has 2 divisors, whose sum is σ = 4323454622. Its totient is φ = 4323454620.

The previous prime is 4323454573. The next prime is 4323454643. The reversal of 4323454621 is 1264543234.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3015547396 + 1307907225 = 54914^2 + 36165^2 .

It is a cyclic number.

It is not a de Polignac number, because 4323454621 - 2⁷ = 4323454493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4323454321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2161727310 + 2161727311.

It is an arithmetic number, because the mean of its divisors is an integer number (2161727311).

Almost surely, 2^4323454621 is an apocalyptic number.

It is an amenable number.

4323454621 is a deficient number, since it is larger than the sum of its proper divisors (1).

4323454621 is an equidigital number, since it uses as much as digits as its factorization.

4323454621 is an evil number, because the sum of its binary digits is even.

The product of its digits is 69120, while the sum is 34.

The square root of 4323454621 is about 65752.9818411302. The cubic root of 4323454621 is about 1629.0845878088.

Adding to 4323454621 its reverse (1264543234), we get a palindrome (5587997855).

The spelling of 4323454621 in words is "four billion, three hundred twenty-three million, four hundred fifty-four thousand, six hundred twenty-one".