83920579 has 2 divisors, whose sum is σ = 83920580. Its totient is φ = 83920578.

The previous prime is 83920559. The next prime is 83920601. The reversal of 83920579 is 97502938.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 83920579 - 2⁵ = 83920547 is a prime.

It is not a weakly prime, because it can be changed into another prime (83920559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41960289 + 41960290.

It is an arithmetic number, because the mean of its divisors is an integer number (41960290).

Almost surely, 2^83920579 is an apocalyptic number.

83920579 is a deficient number, since it is larger than the sum of its proper divisors (1).

83920579 is an equidigital number, since it uses as much as digits as its factorization.

83920579 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 136080, while the sum is 43.

The square root of 83920579 is about 9160.8175945163. The cubic root of 83920579 is about 437.8138443583.

The spelling of 83920579 in words is "eighty-three million, nine hundred twenty thousand, five hundred seventy-nine".