9729656077 has 4 divisors (see below), whose sum is σ = 9730419840. Its totient is φ = 9728892316.

The previous prime is 9729656047. The next prime is 9729656089. The reversal of 9729656077 is 7706569279.

9729656077 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

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: 7706569279 = 31 ⋅248599009.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9729656077 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9729656047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 362443 + ... + 388360.

It is an arithmetic number, because the mean of its divisors is an integer number (2432604960).

Almost surely, 2^9729656077 is an apocalyptic number.

It is an amenable number.

9729656077 is a deficient number, since it is larger than the sum of its proper divisors (763763).

9729656077 is a wasteful number, since it uses less digits than its factorization.

9729656077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 763762.

The product of its (nonzero) digits is 10001880, while the sum is 58.

The square root of 9729656077 is about 98639.0190391206. The cubic root of 9729656077 is about 2134.8424491271.

The spelling of 9729656077 in words is "nine billion, seven hundred twenty-nine million, six hundred fifty-six thousand, seventy-seven".