806803139 has 2 divisors, whose sum is σ = 806803140. Its totient is φ = 806803138.

The previous prime is 806803091. The next prime is 806803147. The reversal of 806803139 is 931308608.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 806803139 - 2²⁴ = 790025923 is a prime.

It is not a weakly prime, because it can be changed into another prime (806803189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 403401569 + 403401570.

It is an arithmetic number, because the mean of its divisors is an integer number (403401570).

Almost surely, 2^806803139 is an apocalyptic number.

806803139 is a deficient number, since it is larger than the sum of its proper divisors (1).

806803139 is an equidigital number, since it uses as much as digits as its factorization.

806803139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31104, while the sum is 38.

The square root of 806803139 is about 28404.2802936459. The cubic root of 806803139 is about 930.9417903884.

The spelling of 806803139 in words is "eight hundred six million, eight hundred three thousand, one hundred thirty-nine".