800079697 has 2 divisors, whose sum is σ = 800079698. Its totient is φ = 800079696.

The previous prime is 800079677. The next prime is 800079703. The reversal of 800079697 is 796970008.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 690165441 + 109914256 = 26271^2 + 10484^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-800079697 is a prime.

It is a super-2 number, since 2×800079697² = 1280255043103223618, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (800079677) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 400039848 + 400039849.

It is an arithmetic number, because the mean of its divisors is an integer number (400039849).

Almost surely, 2^800079697 is an apocalyptic number.

It is an amenable number.

800079697 is a deficient number, since it is larger than the sum of its proper divisors (1).

800079697 is an equidigital number, since it uses as much as digits as its factorization.

800079697 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 190512, while the sum is 46.

The square root of 800079697 is about 28285.6800696041. The cubic root of 800079697 is about 928.3485924244.

The spelling of 800079697 in words is "eight hundred million, seventy-nine thousand, six hundred ninety-seven".