83744861 has 2 divisors, whose sum is σ = 83744862. Its totient is φ = 83744860.

The previous prime is 83744831. The next prime is 83744891. The reversal of 83744861 is 16844738.

It is a balanced prime because it is at equal distance from previous prime (83744831) and next prime (83744891).

It can be written as a sum of positive squares in only one way, i.e., 81342361 + 2402500 = 9019^2 + 1550^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-83744861 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 (83744821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41872430 + 41872431.

It is an arithmetic number, because the mean of its divisors is an integer number (41872431).

Almost surely, 2^83744861 is an apocalyptic number.

It is an amenable number.

83744861 is a deficient number, since it is larger than the sum of its proper divisors (1).

83744861 is an equidigital number, since it uses as much as digits as its factorization.

83744861 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 129024, while the sum is 41.

The square root of 83744861 is about 9151.2218309907. The cubic root of 83744861 is about 437.5080571033.

The spelling of 83744861 in words is "eighty-three million, seven hundred forty-four thousand, eight hundred sixty-one".