9961424293 has 2 divisors, whose sum is σ = 9961424294. Its totient is φ = 9961424292.

The previous prime is 9961424267. The next prime is 9961424299. The reversal of 9961424293 is 3924241699.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6619775044 + 3341649249 = 81362^2 + 57807^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9961424293 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9961424299) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4980712146 + 4980712147.

It is an arithmetic number, because the mean of its divisors is an integer number (4980712147).

Almost surely, 2^9961424293 is an apocalyptic number.

It is an amenable number.

9961424293 is a deficient number, since it is larger than the sum of its proper divisors (1).

9961424293 is an equidigital number, since it uses as much as digits as its factorization.

9961424293 is an evil number, because the sum of its binary digits is even.

The product of its digits is 839808, while the sum is 49.

The square root of 9961424293 is about 99806.9350947117. The cubic root of 9961424293 is about 2151.6608254637.

The spelling of 9961424293 in words is "nine billion, nine hundred sixty-one million, four hundred twenty-four thousand, two hundred ninety-three".