82988779 has 2 divisors, whose sum is σ = 82988780. Its totient is φ = 82988778.

The previous prime is 82988777. The next prime is 82988821. The reversal of 82988779 is 97788928.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 82988779 - 2¹ = 82988777 is a prime.

Together with 82988777, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (82988777) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41494389 + 41494390.

It is an arithmetic number, because the mean of its divisors is an integer number (41494390).

Almost surely, 2^82988779 is an apocalyptic number.

82988779 is a deficient number, since it is larger than the sum of its proper divisors (1).

82988779 is an equidigital number, since it uses as much as digits as its factorization.

82988779 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4064256, while the sum is 58.

The square root of 82988779 is about 9109.8177259482. The cubic root of 82988779 is about 436.1874089122.

The spelling of 82988779 in words is "eighty-two million, nine hundred eighty-eight thousand, seven hundred seventy-nine".