77882291 has 2 divisors, whose sum is σ = 77882292. Its totient is φ = 77882290.

The previous prime is 77882279. The next prime is 77882297. The reversal of 77882291 is 19228877.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-77882291 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (77882297) 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 as a sum of consecutive naturals, namely, 38941145 + 38941146.

It is an arithmetic number, because the mean of its divisors is an integer number (38941146).

Almost surely, 2^77882291 is an apocalyptic number.

77882291 is a deficient number, since it is larger than the sum of its proper divisors (1).

77882291 is an equidigital number, since it uses as much as digits as its factorization.

77882291 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 112896, while the sum is 44.

The square root of 77882291 is about 8825.0943904301. The cubic root of 77882291 is about 427.0508324509.

The spelling of 77882291 in words is "seventy-seven million, eight hundred eighty-two thousand, two hundred ninety-one".