83861773 has 2 divisors, whose sum is σ = 83861774. Its totient is φ = 83861772.

The previous prime is 83861761. The next prime is 83861803. The reversal of 83861773 is 37716838.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 82047364 + 1814409 = 9058^2 + 1347^2 .

It is a cyclic number.

It is not a de Polignac number, because 83861773 - 2²¹ = 81764621 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (83861273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41930886 + 41930887.

It is an arithmetic number, because the mean of its divisors is an integer number (41930887).

Almost surely, 2^83861773 is an apocalyptic number.

It is an amenable number.

83861773 is a deficient number, since it is larger than the sum of its proper divisors (1).

83861773 is an equidigital number, since it uses as much as digits as its factorization.

83861773 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 169344, while the sum is 43.

The square root of 83861773 is about 9157.6073840278. The cubic root of 83861773 is about 437.7115567855.

The spelling of 83861773 in words is "eighty-three million, eight hundred sixty-one thousand, seven hundred seventy-three".