8442971 has 2 divisors, whose sum is σ = 8442972. Its totient is φ = 8442970.

The previous prime is 8442947. The next prime is 8442979. The reversal of 8442971 is 1792448.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 8442971 - 2²² = 4248667 is a prime.

It is not a weakly prime, because it can be changed into another prime (8442979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4221485 + 4221486.

It is an arithmetic number, because the mean of its divisors is an integer number (4221486).

Almost surely, 2^8442971 is an apocalyptic number.

8442971 is a deficient number, since it is larger than the sum of its proper divisors (1).

8442971 is an equidigital number, since it uses as much as digits as its factorization.

8442971 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16128, while the sum is 35.

The square root of 8442971 is about 2905.6790944631. The cubic root of 8442971 is about 203.6253134525.

The spelling of 8442971 in words is "eight million, four hundred forty-two thousand, nine hundred seventy-one".