83985877 has 2 divisors, whose sum is σ = 83985878. Its totient is φ = 83985876.

The previous prime is 83985821. The next prime is 83985887. The reversal of 83985877 is 77858938.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 83887281 + 98596 = 9159^2 + 314^2 .

It is a cyclic number.

It is not a de Polignac number, because 83985877 - 2¹¹ = 83983829 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (83985817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41992938 + 41992939.

It is an arithmetic number, because the mean of its divisors is an integer number (41992939).

Almost surely, 2^83985877 is an apocalyptic number.

It is an amenable number.

83985877 is a deficient number, since it is larger than the sum of its proper divisors (1).

83985877 is an equidigital number, since it uses as much as digits as its factorization.

83985877 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3386880, while the sum is 55.

The square root of 83985877 is about 9164.3808847079. The cubic root of 83985877 is about 437.9273681890.

The spelling of 83985877 in words is "eighty-three million, nine hundred eighty-five thousand, eight hundred seventy-seven".