85344971 has 2 divisors, whose sum is σ = 85344972. Its totient is φ = 85344970.

The previous prime is 85344967. The next prime is 85344983. The reversal of 85344971 is 17944358.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 85344971 - 2² = 85344967 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (85344901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42672485 + 42672486.

It is an arithmetic number, because the mean of its divisors is an integer number (42672486).

Almost surely, 2^85344971 is an apocalyptic number.

85344971 is a deficient number, since it is larger than the sum of its proper divisors (1).

85344971 is an equidigital number, since it uses as much as digits as its factorization.

85344971 is an evil number, because the sum of its binary digits is even.

The product of its digits is 120960, while the sum is 41.

The square root of 85344971 is about 9238.2341927448. The cubic root of 85344971 is about 440.2769795307.

The spelling of 85344971 in words is "eighty-five million, three hundred forty-four thousand, nine hundred seventy-one".