9869423617 has 2 divisors, whose sum is σ = 9869423618. Its totient is φ = 9869423616.

The previous prime is 9869423611. The next prime is 9869423741. The reversal of 9869423617 is 7163249689.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4938013441 + 4931410176 = 70271^2 + 70224^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9869423617 is a prime.

It is not a weakly prime, because it can be changed into another prime (9869423611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4934711808 + 4934711809.

It is an arithmetic number, because the mean of its divisors is an integer number (4934711809).

Almost surely, 2^9869423617 is an apocalyptic number.

It is an amenable number.

9869423617 is a deficient number, since it is larger than the sum of its proper divisors (1).

9869423617 is an equidigital number, since it uses as much as digits as its factorization.

9869423617 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3919104, while the sum is 55.

The square root of 9869423617 is about 99344.9727817165. The cubic root of 9869423617 is about 2145.0163000122.

The spelling of 9869423617 in words is "nine billion, eight hundred sixty-nine million, four hundred twenty-three thousand, six hundred seventeen".