9940571 has 2 divisors, whose sum is σ = 9940572. Its totient is φ = 9940570.

The previous prime is 9940561. The next prime is 9940603. The reversal of 9940571 is 1750499.

It is a weak prime.

It is an emirp because it is prime and its reverse (1750499) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9940571 - 2⁶ = 9940507 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (9940501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4970285 + 4970286.

It is an arithmetic number, because the mean of its divisors is an integer number (4970286).

Almost surely, 2^9940571 is an apocalyptic number.

9940571 is a deficient number, since it is larger than the sum of its proper divisors (1).

9940571 is an equidigital number, since it uses as much as digits as its factorization.

9940571 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11340, while the sum is 35.

The square root of 9940571 is about 3152.8671078877. The cubic root of 9940571 is about 215.0158344206.

The spelling of 9940571 in words is "nine million, nine hundred forty thousand, five hundred seventy-one".