8420817307 has 4 divisors (see below), whose sum is σ = 9623791216. Its totient is φ = 7217843400.

The previous prime is 8420817283. The next prime is 8420817337. The reversal of 8420817307 is 7037180248.

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

It is a cyclic number.

It is not a de Polignac number, because 8420817307 - 2²⁷ = 8286599579 is a prime.

It is a super-3 number, since 3×8420817307³ (a number of 31 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 8420817307.

It is not an unprimeable number, because it can be changed into a prime (8420817337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 601486944 + ... + 601486957.

It is an arithmetic number, because the mean of its divisors is an integer number (2405947804).

Almost surely, 2^8420817307 is an apocalyptic number.

8420817307 is a deficient number, since it is larger than the sum of its proper divisors (1202973909).

8420817307 is a wasteful number, since it uses less digits than its factorization.

8420817307 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1202973908.

The product of its (nonzero) digits is 75264, while the sum is 40.

The square root of 8420817307 is about 91765.0113441937. The cubic root of 8420817307 is about 2034.4705850755.

The spelling of 8420817307 in words is "eight billion, four hundred twenty million, eight hundred seventeen thousand, three hundred seven".