9471391 has 2 divisors, whose sum is σ = 9471392. Its totient is φ = 9471390.

The previous prime is 9471383. The next prime is 9471403. The reversal of 9471391 is 1931749.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 9471391 - 2³ = 9471383 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9471311) 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, 4735695 + 4735696.

It is an arithmetic number, because the mean of its divisors is an integer number (4735696).

Almost surely, 2^9471391 is an apocalyptic number.

9471391 is a deficient number, since it is larger than the sum of its proper divisors (1).

9471391 is an equidigital number, since it uses as much as digits as its factorization.

9471391 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6804, while the sum is 34.

The square root of 9471391 is about 3077.5625095195. The cubic root of 9471391 is about 211.5783642531.

The spelling of 9471391 in words is "nine million, four hundred seventy-one thousand, three hundred ninety-one".