8097921589 has 2 divisors, whose sum is σ = 8097921590. Its totient is φ = 8097921588.

The previous prime is 8097921577. The next prime is 8097921607. The reversal of 8097921589 is 9851297908.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7526950564 + 570971025 = 86758^2 + 23895^2 .

It is a cyclic number.

It is not a de Polignac number, because 8097921589 - 2⁹ = 8097921077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8097921509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4048960794 + 4048960795.

It is an arithmetic number, because the mean of its divisors is an integer number (4048960795).

Almost surely, 2^8097921589 is an apocalyptic number.

It is an amenable number.

8097921589 is a deficient number, since it is larger than the sum of its proper divisors (1).

8097921589 is an equidigital number, since it uses as much as digits as its factorization.

8097921589 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3265920, while the sum is 58.

The square root of 8097921589 is about 89988.4525314221. The cubic root of 8097921589 is about 2008.1270631072.

The spelling of 8097921589 in words is "eight billion, ninety-seven million, nine hundred twenty-one thousand, five hundred eighty-nine".