8321422913 has 12 divisors (see below), whose sum is σ = 8792431488. Its totient is φ = 7874488440.

The previous prime is 8321422903. The next prime is 8321422927. The reversal of 8321422913 is 3192241238.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-8321422913 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8321422903) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 316220 + ... + 341522.

It is an arithmetic number, because the mean of its divisors is an integer number (732702624).

Almost surely, 2^8321422913 is an apocalyptic number.

It is an amenable number.

8321422913 is a deficient number, since it is larger than the sum of its proper divisors (471008575).

8321422913 is a wasteful number, since it uses less digits than its factorization.

8321422913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26252 (or 26233 counting only the distinct ones).

The product of its digits is 20736, while the sum is 35.

The square root of 8321422913 is about 91221.8335323293. The cubic root of 8321422913 is about 2026.4343168960.

The spelling of 8321422913 in words is "eight billion, three hundred twenty-one million, four hundred twenty-two thousand, nine hundred thirteen".