8629573921 has 2 divisors, whose sum is σ = 8629573922. Its totient is φ = 8629573920.

The previous prime is 8629573879. The next prime is 8629573963. The reversal of 8629573921 is 1293759268.

It is a balanced prime because it is at equal distance from previous prime (8629573879) and next prime (8629573963).

It can be written as a sum of positive squares in only one way, i.e., 4373838225 + 4255735696 = 66135^2 + 65236^2 .

It is a cyclic number.

It is not a de Polignac number, because 8629573921 - 2⁹ = 8629573409 is a prime.

It is the 92896-th Hogben number.

It is not a weakly prime, because it can be changed into another prime (8629570921) by changing a digit.

It is a nontrivial repunit in base 92895.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4314786960 + 4314786961.

It is an arithmetic number, because the mean of its divisors is an integer number (4314786961).

Almost surely, 2^8629573921 is an apocalyptic number.

It is an amenable number.

8629573921 is a deficient number, since it is larger than the sum of its proper divisors (1).

8629573921 is an equidigital number, since it uses as much as digits as its factorization.

8629573921 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1632960, while the sum is 52.

The square root of 8629573921 is about 92895.5000040368. The cubic root of 8629573921 is about 2051.1454174747.

The spelling of 8629573921 in words is "eight billion, six hundred twenty-nine million, five hundred seventy-three thousand, nine hundred twenty-one".