8434860839 has 2 divisors, whose sum is σ = 8434860840. Its totient is φ = 8434860838.

The previous prime is 8434860787. The next prime is 8434860857. The reversal of 8434860839 is 9380684348.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8434860839 is a prime.

It is a super-2 number, since 2×8434860839² (a number of 21 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8434860869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4217430419 + 4217430420.

It is an arithmetic number, because the mean of its divisors is an integer number (4217430420).

Almost surely, 2^8434860839 is an apocalyptic number.

8434860839 is a deficient number, since it is larger than the sum of its proper divisors (1).

8434860839 is an equidigital number, since it uses as much as digits as its factorization.

8434860839 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3981312, while the sum is 53.

The square root of 8434860839 is about 91841.4984579411. The cubic root of 8434860839 is about 2035.6009300118.

The spelling of 8434860839 in words is "eight billion, four hundred thirty-four million, eight hundred sixty thousand, eight hundred thirty-nine".