8445971 has 2 divisors, whose sum is σ = 8445972. Its totient is φ = 8445970.

The previous prime is 8445967. The next prime is 8445973. The reversal of 8445971 is 1795448.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 8445971 - 2² = 8445967 is a prime.

It is a super-2 number, since 2×8445971² = 142668852265682, which contains 22 as substring.

Together with 8445973, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (8445973) 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, 4222985 + 4222986.

It is an arithmetic number, because the mean of its divisors is an integer number (4222986).

Almost surely, 2^8445971 is an apocalyptic number.

8445971 is a deficient number, since it is larger than the sum of its proper divisors (1).

8445971 is an equidigital number, since it uses as much as digits as its factorization.

8445971 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 40320, while the sum is 38.

The square root of 8445971 is about 2906.1952790547. The cubic root of 8445971 is about 203.6494283287.

The spelling of 8445971 in words is "eight million, four hundred forty-five thousand, nine hundred seventy-one".