8456788321 has 4 divisors (see below), whose sum is σ = 8458747072. Its totient is φ = 8454829572.

The previous prime is 8456788303. The next prime is 8456788343. The reversal of 8456788321 is 1238876548.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 8456788321 - 2⁹ = 8456787809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8456788621) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 972885 + ... + 981538.

It is an arithmetic number, because the mean of its divisors is an integer number (2114686768).

Almost surely, 2^8456788321 is an apocalyptic number.

It is an amenable number.

8456788321 is a deficient number, since it is larger than the sum of its proper divisors (1958751).

8456788321 is a wasteful number, since it uses less digits than its factorization.

8456788321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1958750.

The product of its digits is 2580480, while the sum is 52.

The square root of 8456788321 is about 91960.7977401240. The cubic root of 8456788321 is about 2037.3633372700.

The spelling of 8456788321 in words is "eight billion, four hundred fifty-six million, seven hundred eighty-eight thousand, three hundred twenty-one".