9968724869 has 4 divisors (see below), whose sum is σ = 9972931680. Its totient is φ = 9964518060.

The previous prime is 9968724847. The next prime is 9968724881. The reversal of 9968724869 is 9684278699.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9684278699 = 19381 ⋅499679.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9968724869 is a prime.

It is a super-2 number, since 2×9968724869² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 9968724799 and 9968724808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9962724869) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2099849 + ... + 2104590.

It is an arithmetic number, because the mean of its divisors is an integer number (2493232920).

Almost surely, 2^9968724869 is an apocalyptic number.

It is an amenable number.

9968724869 is a deficient number, since it is larger than the sum of its proper divisors (4206811).

9968724869 is a wasteful number, since it uses less digits than its factorization.

9968724869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4206810.

The product of its digits is 94058496, while the sum is 68.

The square root of 9968724869 is about 99843.5018867027. The cubic root of 9968724869 is about 2152.1863369103.

The spelling of 9968724869 in words is "nine billion, nine hundred sixty-eight million, seven hundred twenty-four thousand, eight hundred sixty-nine".