8453059921 has 2 divisors, whose sum is σ = 8453059922. Its totient is φ = 8453059920.

The previous prime is 8453059903. The next prime is 8453059931. The reversal of 8453059921 is 1299503548.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8397706321 + 55353600 = 91639^2 + 7440^2 .

It is a cyclic number.

It is not a de Polignac number, because 8453059921 - 2⁷ = 8453059793 is a prime.

It is not a weakly prime, because it can be changed into another prime (8453059931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4226529960 + 4226529961.

It is an arithmetic number, because the mean of its divisors is an integer number (4226529961).

Almost surely, 2^8453059921 is an apocalyptic number.

It is an amenable number.

8453059921 is a deficient number, since it is larger than the sum of its proper divisors (1).

8453059921 is an equidigital number, since it uses as much as digits as its factorization.

8453059921 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 388800, while the sum is 46.

The square root of 8453059921 is about 91940.5238238286. The cubic root of 8453059921 is about 2037.0638846581.

The spelling of 8453059921 in words is "eight billion, four hundred fifty-three million, fifty-nine thousand, nine hundred twenty-one".