9761317921 has 16 divisors (see below), whose sum is σ = 10352966400. Its totient is φ = 9184215040.

The previous prime is 9761317903. The next prime is 9761317981. The reversal of 9761317921 is 1297131679.

It is a cyclic number.

It is not a de Polignac number, because 9761317921 - 2⁷ = 9761317793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9761317981) 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, 726561 + ... + 739873.

It is an arithmetic number, because the mean of its divisors is an integer number (647060400).

Almost surely, 2^9761317921 is an apocalyptic number.

It is an amenable number.

9761317921 is a deficient number, since it is larger than the sum of its proper divisors (591648479).

9761317921 is a wasteful number, since it uses less digits than its factorization.

9761317921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13856.

The product of its digits is 142884, while the sum is 46.

The square root of 9761317921 is about 98799.3821893639. The cubic root of 9761317921 is about 2137.1556470730.

The spelling of 9761317921 in words is "nine billion, seven hundred sixty-one million, three hundred seventeen thousand, nine hundred twenty-one".