83828971 has 4 divisors (see below), whose sum is σ = 84263512. Its totient is φ = 83394432.

The previous prime is 83828959. The next prime is 83828977. The reversal of 83828971 is 17982838.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 83828971 - 2¹¹ = 83826923 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83828977) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 216981 + ... + 217366.

It is an arithmetic number, because the mean of its divisors is an integer number (21065878).

Almost surely, 2^83828971 is an apocalyptic number.

83828971 is a deficient number, since it is larger than the sum of its proper divisors (434541).

83828971 is a wasteful number, since it uses less digits than its factorization.

83828971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 434540.

The product of its digits is 193536, while the sum is 46.

The square root of 83828971 is about 9155.8162388724. The cubic root of 83828971 is about 437.6544799778.

The spelling of 83828971 in words is "eighty-three million, eight hundred twenty-eight thousand, nine hundred seventy-one".