800634491 has 2 divisors, whose sum is σ = 800634492. Its totient is φ = 800634490.

The previous prime is 800634479. The next prime is 800634503. The reversal of 800634491 is 194436008.

It is a balanced prime because it is at equal distance from previous prime (800634479) and next prime (800634503).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-800634491 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 (800634421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 400317245 + 400317246.

It is an arithmetic number, because the mean of its divisors is an integer number (400317246).

Almost surely, 2^800634491 is an apocalyptic number.

800634491 is a deficient number, since it is larger than the sum of its proper divisors (1).

800634491 is an equidigital number, since it uses as much as digits as its factorization.

800634491 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 800634491 is about 28295.4853466061. The cubic root of 800634491 is about 928.5631223974.

The spelling of 800634491 in words is "eight hundred million, six hundred thirty-four thousand, four hundred ninety-one".