83884861 has 2 divisors, whose sum is σ = 83884862. Its totient is φ = 83884860.

The previous prime is 83884859. The next prime is 83884891. The reversal of 83884861 is 16848838.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 81540900 + 2343961 = 9030^2 + 1531^2 .

It is a cyclic number.

It is not a de Polignac number, because 83884861 - 2¹ = 83884859 is a prime.

Together with 83884859, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (83884891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41942430 + 41942431.

It is an arithmetic number, because the mean of its divisors is an integer number (41942431).

Almost surely, 2^83884861 is an apocalyptic number.

It is an amenable number.

83884861 is a deficient number, since it is larger than the sum of its proper divisors (1).

83884861 is an equidigital number, since it uses as much as digits as its factorization.

83884861 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 294912, while the sum is 46.

The square root of 83884861 is about 9158.8678885548. The cubic root of 83884861 is about 437.7517219159.

The spelling of 83884861 in words is "eighty-three million, eight hundred eighty-four thousand, eight hundred sixty-one".