805406983 has 2 divisors, whose sum is σ = 805406984. Its totient is φ = 805406982.

The previous prime is 805406957. The next prime is 805407037. The reversal of 805406983 is 389604508.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 805406983 - 2²⁹ = 268536071 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (805406083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 402703491 + 402703492.

It is an arithmetic number, because the mean of its divisors is an integer number (402703492).

Almost surely, 2^805406983 is an apocalyptic number.

805406983 is a deficient number, since it is larger than the sum of its proper divisors (1).

805406983 is an equidigital number, since it uses as much as digits as its factorization.

805406983 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 207360, while the sum is 43.

The square root of 805406983 is about 28379.6931449232. The cubic root of 805406983 is about 930.4044885571.

The spelling of 805406983 in words is "eight hundred five million, four hundred six thousand, nine hundred eighty-three".