9634991 has 2 divisors, whose sum is σ = 9634992. Its totient is φ = 9634990.

The previous prime is 9634987. The next prime is 9634997. The reversal of 9634991 is 1994369.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 9634991 - 2² = 9634987 is a prime.

It is a super-3 number, since 3×9634991³ (a number of 22 digits) contains 333 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9634997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4817495 + 4817496.

It is an arithmetic number, because the mean of its divisors is an integer number (4817496).

Almost surely, 2^9634991 is an apocalyptic number.

9634991 is a deficient number, since it is larger than the sum of its proper divisors (1).

9634991 is an equidigital number, since it uses as much as digits as its factorization.

9634991 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 52488, while the sum is 41.

The square root of 9634991 is about 3104.0281893050. The cubic root of 9634991 is about 212.7896193963.

The spelling of 9634991 in words is "nine million, six hundred thirty-four thousand, nine hundred ninety-one".