9753994121 has 2 divisors, whose sum is σ = 9753994122. Its totient is φ = 9753994120.

The previous prime is 9753994111. The next prime is 9753994127. The reversal of 9753994121 is 1214993579.

9753994121 = 69835² + 69836².

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4877066896 + 4876927225 = 69836^2 + 69835^2 .

It is a cyclic number.

It is not a de Polignac number, because 9753994121 - 2³⁰ = 8680252297 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 9753994121.

It is not a weakly prime, because it can be changed into another prime (9753994127) 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 as a sum of consecutive naturals, namely, 4876997060 + 4876997061.

It is an arithmetic number, because the mean of its divisors is an integer number (4876997061).

Almost surely, 2^9753994121 is an apocalyptic number.

9753994121 is the 69836-th centered square number.

It is an amenable number.

9753994121 is a deficient number, since it is larger than the sum of its proper divisors (1).

9753994121 is an equidigital number, since it uses as much as digits as its factorization.

9753994121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 612360, while the sum is 50.

The square root of 9753994121 is about 98762.3112376376. The cubic root of 9753994121 is about 2136.6210192418.

The spelling of 9753994121 in words is "nine billion, seven hundred fifty-three million, nine hundred ninety-four thousand, one hundred twenty-one".