83005779 has 4 divisors (see below), whose sum is σ = 110674376. Its totient is φ = 55337184.

The previous prime is 83005759. The next prime is 83005787. The reversal of 83005779 is 97750038.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 83005779 - 2¹⁷ = 82874707 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83005709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13834294 + ... + 13834299.

It is an arithmetic number, because the mean of its divisors is an integer number (27668594).

Almost surely, 2^83005779 is an apocalyptic number.

83005779 is a deficient number, since it is larger than the sum of its proper divisors (27668597).

83005779 is a wasteful number, since it uses less digits than its factorization.

83005779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27668596.

The product of its (nonzero) digits is 52920, while the sum is 39.

The square root of 83005779 is about 9110.7507374530. The cubic root of 83005779 is about 436.2171907685.

The spelling of 83005779 in words is "eighty-three million, five thousand, seven hundred seventy-nine".