8434970917 has 2 divisors, whose sum is σ = 8434970918. Its totient is φ = 8434970916.

The previous prime is 8434970909. The next prime is 8434970927. The reversal of 8434970917 is 7190794348.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8419714081 + 15256836 = 91759^2 + 3906^2 .

It is a cyclic number.

It is not a de Polignac number, because 8434970917 - 2³ = 8434970909 is a prime.

It is a super-2 number, since 2×8434970917² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8434970927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4217485458 + 4217485459.

It is an arithmetic number, because the mean of its divisors is an integer number (4217485459).

Almost surely, 2^8434970917 is an apocalyptic number.

It is an amenable number.

8434970917 is a deficient number, since it is larger than the sum of its proper divisors (1).

8434970917 is an equidigital number, since it uses as much as digits as its factorization.

8434970917 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1524096, while the sum is 52.

The square root of 8434970917 is about 91842.0977384554. The cubic root of 8434970917 is about 2035.6097850840.

The spelling of 8434970917 in words is "eight billion, four hundred thirty-four million, nine hundred seventy thousand, nine hundred seventeen".