8398821164 has 6 divisors (see below), whose sum is σ = 14697937044. Its totient is φ = 4199410580.

The previous prime is 8398821149. The next prime is 8398821169. The reversal of 8398821164 is 4611288938.

It is not an unprimeable number, because it can be changed into a prime (8398821169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1049852642 + ... + 1049852649.

It is an arithmetic number, because the mean of its divisors is an integer number (2449656174).

Almost surely, 2^8398821164 is an apocalyptic number.

It is an amenable number.

8398821164 is a deficient number, since it is larger than the sum of its proper divisors (6299115880).

8398821164 is a wasteful number, since it uses less digits than its factorization.

8398821164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2099705295 (or 2099705293 counting only the distinct ones).

The product of its digits is 663552, while the sum is 50.

The square root of 8398821164 is about 91645.0825958491. The cubic root of 8398821164 is about 2032.6976167512.

The spelling of 8398821164 in words is "eight billion, three hundred ninety-eight million, eight hundred twenty-one thousand, one hundred sixty-four".