9689077521 has 12 divisors (see below), whose sum is σ = 14513680272. Its totient is φ = 6459384852.

The previous prime is 9689077457. The next prime is 9689077549. The reversal of 9689077521 is 1257709869.

It is not a de Polignac number, because 9689077521 - 2⁶ = 9689077457 is a prime.

It is not an unprimeable number, because it can be changed into a prime (9689077571) 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 11 ways as a sum of consecutive naturals, for example, 19936131 + ... + 19936616.

It is an arithmetic number, because the mean of its divisors is an integer number (1209473356).

Almost surely, 2^9689077521 is an apocalyptic number.

It is an amenable number.

9689077521 is a deficient number, since it is larger than the sum of its proper divisors (4824602751).

9689077521 is an equidigital number, since it uses as much as digits as its factorization.

9689077521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39872762 (or 39872750 counting only the distinct ones).

The product of its (nonzero) digits is 1905120, while the sum is 54.

The square root of 9689077521 is about 98433.1119136239. Note that the first 3 decimals coincide. The cubic root of 9689077521 is about 2131.8704518112.

The spelling of 9689077521 in words is "nine billion, six hundred eighty-nine million, seventy-seven thousand, five hundred twenty-one".