801680039 has 2 divisors, whose sum is σ = 801680040. Its totient is φ = 801680038.

The previous prime is 801680021. The next prime is 801680041. The reversal of 801680039 is 930086108.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 801680039 - 2²⁴ = 784902823 is a prime.

Together with 801680041, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 801679990 and 801680008.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (801683039) 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, 400840019 + 400840020.

It is an arithmetic number, because the mean of its divisors is an integer number (400840020).

Almost surely, 2^801680039 is an apocalyptic number.

801680039 is a deficient number, since it is larger than the sum of its proper divisors (1).

801680039 is an equidigital number, since it uses as much as digits as its factorization.

801680039 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 35.

The square root of 801680039 is about 28313.9548456234. The cubic root of 801680039 is about 928.9671498776.

The spelling of 801680039 in words is "eight hundred one million, six hundred eighty thousand, thirty-nine".