8424218329 has 4 divisors (see below), whose sum is σ = 8428459984. Its totient is φ = 8419976676.

The previous prime is 8424218321. The next prime is 8424218333. The reversal of 8424218329 is 9238124248.

It is a happy number.

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 8424218329 - 2³ = 8424218321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8424218321) 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, 2117847 + ... + 2121820.

It is an arithmetic number, because the mean of its divisors is an integer number (2107114996).

Almost surely, 2^8424218329 is an apocalyptic number.

It is an amenable number.

8424218329 is a deficient number, since it is larger than the sum of its proper divisors (4241655).

8424218329 is a wasteful number, since it uses less digits than its factorization.

8424218329 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4241654.

The product of its digits is 221184, while the sum is 43.

The square root of 8424218329 is about 91783.5406213990. The cubic root of 8424218329 is about 2034.7444439995.

The spelling of 8424218329 in words is "eight billion, four hundred twenty-four million, two hundred eighteen thousand, three hundred twenty-nine".