9895995989 has 8 divisors (see below), whose sum is σ = 11167895520. Its totient is φ = 8686140400.

The previous prime is 9895995971. The next prime is 9895996003.

9895995989 is nontrivially palindromic in base 10.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 9895995989 - 2²⁸ = 9627560533 is a prime.

It is a super-2 number, since 2×9895995989² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9895995959) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15510647 + ... + 15511284.

It is an arithmetic number, because the mean of its divisors is an integer number (1395986940).

Almost surely, 2^9895995989 is an apocalyptic number.

It is an amenable number.

9895995989 is a deficient number, since it is larger than the sum of its proper divisors (1271899531).

9895995989 is a wasteful number, since it uses less digits than its factorization.

9895995989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31021971.

The product of its digits is 850305600, while the sum is 80.

The square root of 9895995989 is about 99478.6207634585. The cubic root of 9895995989 is about 2146.9396508859.

The spelling of 9895995989 in words is "nine billion, eight hundred ninety-five million, nine hundred ninety-five thousand, nine hundred eighty-nine".