83981743 has 2 divisors, whose sum is σ = 83981744. Its totient is φ = 83981742.

The previous prime is 83981741. The next prime is 83981747. The reversal of 83981743 is 34718938.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 83981743 - 2¹ = 83981741 is a prime.

Together with 83981741, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 83981743.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (83981741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41990871 + 41990872.

It is an arithmetic number, because the mean of its divisors is an integer number (41990872).

Almost surely, 2^83981743 is an apocalyptic number.

83981743 is a deficient number, since it is larger than the sum of its proper divisors (1).

83981743 is an equidigital number, since it uses as much as digits as its factorization.

83981743 is an evil number, because the sum of its binary digits is even.

The product of its digits is 145152, while the sum is 43.

The square root of 83981743 is about 9164.1553347813. The cubic root of 83981743 is about 437.9201827688.

The spelling of 83981743 in words is "eighty-three million, nine hundred eighty-one thousand, seven hundred forty-three".