7957871 has 2 divisors, whose sum is σ = 7957872. Its totient is φ = 7957870.

The previous prime is 7957867. The next prime is 7957879. The reversal of 7957871 is 1787597.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 7957871 - 2² = 7957867 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7957879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3978935 + 3978936.

It is an arithmetic number, because the mean of its divisors is an integer number (3978936).

Almost surely, 2^7957871 is an apocalyptic number.

7957871 is a deficient number, since it is larger than the sum of its proper divisors (1).

7957871 is an equidigital number, since it uses as much as digits as its factorization.

7957871 is an evil number, because the sum of its binary digits is even.

The product of its digits is 123480, while the sum is 44.

The square root of 7957871 is about 2820.9698686799. The cubic root of 7957871 is about 199.6483069224.

The spelling of 7957871 in words is "seven million, nine hundred fifty-seven thousand, eight hundred seventy-one".