800699971 has 2 divisors, whose sum is σ = 800699972. Its totient is φ = 800699970.

The previous prime is 800699941. The next prime is 800700007. The reversal of 800699971 is 179996008.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-800699971 is a prime.

It is a super-2 number, since 2×800699971² = 1282240887118801682, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (800699941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 400349985 + 400349986.

It is an arithmetic number, because the mean of its divisors is an integer number (400349986).

Almost surely, 2^800699971 is an apocalyptic number.

800699971 is a deficient number, since it is larger than the sum of its proper divisors (1).

800699971 is an equidigital number, since it uses as much as digits as its factorization.

800699971 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 244944, while the sum is 49.

The square root of 800699971 is about 28296.6423979949. The cubic root of 800699971 is about 928.5884359274.

The spelling of 800699971 in words is "eight hundred million, six hundred ninety-nine thousand, nine hundred seventy-one".