9976689999 has 16 divisors (see below), whose sum is σ = 14879484000. Its totient is φ = 6606485568.

The previous prime is 9976689977. The next prime is 9976690039. The reversal of 9976689999 is 9999866799.

It is a happy number.

It is not a de Polignac number, because 9976689999 - 2¹³ = 9976681807 is a prime.

It is a super-2 number, since 2×9976689999² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9976687999) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1235934 + ... + 1243979.

It is an arithmetic number, because the mean of its divisors is an integer number (929967750).

Almost surely, 2^9976689999 is an apocalyptic number.

9976689999 is a deficient number, since it is larger than the sum of its proper divisors (4902794001).

9976689999 is a wasteful number, since it uses less digits than its factorization.

9976689999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2480071 (or 2480065 counting only the distinct ones).

The product of its digits is 1071385056, while the sum is 81.

The square root of 9976689999 is about 99883.3819962060. The cubic root of 9976689999 is about 2152.7593918241.

The spelling of 9976689999 in words is "nine billion, nine hundred seventy-six million, six hundred eighty-nine thousand, nine hundred ninety-nine".