9469991 has 2 divisors, whose sum is σ = 9469992. Its totient is φ = 9469990.

The previous prime is 9469963. The next prime is 9470017. The reversal of 9469991 is 1999649.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 9469991 - 2⁶ = 9469927 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9463991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4734995 + 4734996.

It is an arithmetic number, because the mean of its divisors is an integer number (4734996).

Almost surely, 2^9469991 is an apocalyptic number.

9469991 is a deficient number, since it is larger than the sum of its proper divisors (1).

9469991 is an equidigital number, since it uses as much as digits as its factorization.

9469991 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 157464, while the sum is 47.

The square root of 9469991 is about 3077.3350483820. The cubic root of 9469991 is about 211.5679390225.

The spelling of 9469991 in words is "nine million, four hundred sixty-nine thousand, nine hundred ninety-one".