805600979 has 2 divisors, whose sum is σ = 805600980. Its totient is φ = 805600978.

The previous prime is 805600973. The next prime is 805601023. The reversal of 805600979 is 979006508.

It is an a-pointer prime, because the next prime (805601023) can be obtained adding 805600979 to its sum of digits (44).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 805600979 - 2⁸ = 805600723 is a prime.

It is not a weakly prime, because it can be changed into another prime (805600973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 402800489 + 402800490.

It is an arithmetic number, because the mean of its divisors is an integer number (402800490).

Almost surely, 2^805600979 is an apocalyptic number.

805600979 is a deficient number, since it is larger than the sum of its proper divisors (1).

805600979 is an equidigital number, since it uses as much as digits as its factorization.

805600979 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 805600979 is about 28383.1108055477. The cubic root of 805600979 is about 930.4791838202.

The spelling of 805600979 in words is "eight hundred five million, six hundred thousand, nine hundred seventy-nine".