80305983 has 12 divisors (see below), whose sum is σ = 118695720. Its totient is φ = 52292016.

The previous prime is 80305969. The next prime is 80305991. The reversal of 80305983 is 38950308.

It is not a de Polignac number, because 80305983 - 2⁶ = 80305919 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80305963) 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 in 11 ways as a sum of consecutive naturals, for example, 103368 + ... + 104141.

It is an arithmetic number, because the mean of its divisors is an integer number (9891310).

Almost surely, 2^80305983 is an apocalyptic number.

80305983 is a deficient number, since it is larger than the sum of its proper divisors (38389737).

80305983 is a wasteful number, since it uses less digits than its factorization.

80305983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207558 (or 207555 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 80305983 is about 8961.3605551836. The cubic root of 80305983 is about 431.4355894329.

The spelling of 80305983 in words is "eighty million, three hundred five thousand, nine hundred eighty-three".