800271971 has 2 divisors, whose sum is σ = 800271972. Its totient is φ = 800271970.

The previous prime is 800271931. The next prime is 800272009. The reversal of 800271971 is 179172008.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-800271971 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (800271911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 400135985 + 400135986.

It is an arithmetic number, because the mean of its divisors is an integer number (400135986).

Almost surely, 2^800271971 is an apocalyptic number.

800271971 is a deficient number, since it is larger than the sum of its proper divisors (1).

800271971 is an equidigital number, since it uses as much as digits as its factorization.

800271971 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7056, while the sum is 35.

The square root of 800271971 is about 28289.0786523704. The cubic root of 800271971 is about 928.4229529333.

The spelling of 800271971 in words is "eight hundred million, two hundred seventy-one thousand, nine hundred seventy-one".