8420807439 has 16 divisors (see below), whose sum is σ = 13609386240. Its totient is φ = 5103519480.

The previous prime is 8420807411. The next prime is 8420807477. The reversal of 8420807439 is 9347080248.

8420807439 is a `hidden beast` number, since 8 + 4 + 208 + 0 + 7 + 439 = 666.

It is not a de Polignac number, because 8420807439 - 2¹⁵ = 8420774671 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 8420807394 and 8420807403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8420800439) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14176147 + ... + 14176740.

It is an arithmetic number, because the mean of its divisors is an integer number (850586640).

Almost surely, 2^8420807439 is an apocalyptic number.

8420807439 is a deficient number, since it is larger than the sum of its proper divisors (5188578801).

8420807439 is a wasteful number, since it uses less digits than its factorization.

8420807439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28352907 (or 28352901 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 45.

The square root of 8420807439 is about 91764.9575764082. The cubic root of 8420807439 is about 2034.4697903718.

The spelling of 8420807439 in words is "eight billion, four hundred twenty million, eight hundred seven thousand, four hundred thirty-nine".