9699994081 has 4 divisors (see below), whose sum is σ = 9703178500. Its totient is φ = 9696809664.

The previous prime is 9699993973. The next prime is 9699994123. The reversal of 9699994081 is 1804999969.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1239673681 + 8460320400 = 35209^2 + 91980^2 .

It is a cyclic number.

It is not a de Polignac number, because 9699994081 - 2¹¹ = 9699992033 is a prime.

It is a super-2 number, since 2×9699994081² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9699994981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1587636 + ... + 1593733.

It is an arithmetic number, because the mean of its divisors is an integer number (2425794625).

Almost surely, 2^9699994081 is an apocalyptic number.

It is an amenable number.

9699994081 is a deficient number, since it is larger than the sum of its proper divisors (3184419).

9699994081 is a wasteful number, since it uses less digits than its factorization.

9699994081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3184418.

The product of its (nonzero) digits is 11337408, while the sum is 64.

The square root of 9699994081 is about 98488.5479687867. The cubic root of 9699994081 is about 2132.6708017161.

The spelling of 9699994081 in words is "nine billion, six hundred ninety-nine million, nine hundred ninety-four thousand, eighty-one".