83943871 has 12 divisors (see below), whose sum is σ = 92647800. Its totient is φ = 75999440.

The previous prime is 83943857. The next prime is 83943887. The reversal of 83943871 is 17834938.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-83943871 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83949871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31260 + ... + 33838.

It is an arithmetic number, because the mean of its divisors is an integer number (7720650).

Almost surely, 2^83943871 is an apocalyptic number.

83943871 is a deficient number, since it is larger than the sum of its proper divisors (8703929).

83943871 is a wasteful number, since it uses less digits than its factorization.

83943871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2870 (or 2859 counting only the distinct ones).

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

The square root of 83943871 is about 9162.0887902268. The cubic root of 83943871 is about 437.8543454165.

The spelling of 83943871 in words is "eighty-three million, nine hundred forty-three thousand, eight hundred seventy-one".