806005979 has 2 divisors, whose sum is σ = 806005980. Its totient is φ = 806005978.

The previous prime is 806005969. The next prime is 806006009. The reversal of 806005979 is 979500608.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 806005979 - 2⁸ = 806005723 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (806005969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 403002989 + 403002990.

It is an arithmetic number, because the mean of its divisors is an integer number (403002990).

Almost surely, 2^806005979 is an apocalyptic number.

806005979 is a deficient number, since it is larger than the sum of its proper divisors (1).

806005979 is an equidigital number, since it uses as much as digits as its factorization.

806005979 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 136080, while the sum is 44.

The square root of 806005979 is about 28390.2444336078. The cubic root of 806005979 is about 930.6350843824.

The spelling of 806005979 in words is "eight hundred six million, five thousand, nine hundred seventy-nine".