8395598921 has 4 divisors (see below), whose sum is σ = 8395896852. Its totient is φ = 8395300992.

The previous prime is 8395598891. The next prime is 8395598929. The reversal of 8395598921 is 1298955938.

8395598921 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 409495696 + 7986103225 = 20236^2 + 89365^2 .

It is a cyclic number.

It is not a de Polignac number, because 8395598921 - 2²⁶ = 8328490057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8395598929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 101696 + ... + 164721.

It is an arithmetic number, because the mean of its divisors is an integer number (2098974213).

Almost surely, 2^8395598921 is an apocalyptic number.

It is an amenable number.

8395598921 is a deficient number, since it is larger than the sum of its proper divisors (297931).

8395598921 is a wasteful number, since it uses less digits than its factorization.

8395598921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 297930.

The product of its digits is 6998400, while the sum is 59.

The square root of 8395598921 is about 91627.5008990205. The cubic root of 8395598921 is about 2032.4376325089.

The spelling of 8395598921 in words is "eight billion, three hundred ninety-five million, five hundred ninety-eight thousand, nine hundred twenty-one".