9534991 has 2 divisors, whose sum is σ = 9534992. Its totient is φ = 9534990.

The previous prime is 9534989. The next prime is 9535007. The reversal of 9534991 is 1994359.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 9534991 - 2¹ = 9534989 is a prime.

Together with 9534989, it forms a pair of twin primes.

9534991 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9534901) 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, 4767495 + 4767496.

It is an arithmetic number, because the mean of its divisors is an integer number (4767496).

Almost surely, 2^9534991 is an apocalyptic number.

9534991 is a deficient number, since it is larger than the sum of its proper divisors (1).

9534991 is an equidigital number, since it uses as much as digits as its factorization.

9534991 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 43740, while the sum is 40.

The square root of 9534991 is about 3087.8780740178. The cubic root of 9534991 is about 212.0508881636.

The spelling of 9534991 in words is "nine million, five hundred thirty-four thousand, nine hundred ninety-one".