82389871 has 8 divisors (see below), whose sum is σ = 91828080. Its totient is φ = 73461888.

The previous prime is 82389863. The next prime is 82389889. The reversal of 82389871 is 17898328.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 82389871 - 2³ = 82389863 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 (82389821) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 127216 + ... + 127861.

It is an arithmetic number, because the mean of its divisors is an integer number (11478510).

Almost surely, 2^82389871 is an apocalyptic number.

82389871 is a deficient number, since it is larger than the sum of its proper divisors (9438209).

82389871 is a wasteful number, since it uses less digits than its factorization.

82389871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255113.

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

The square root of 82389871 is about 9076.8866358460. The cubic root of 82389871 is about 435.1355916765.

The spelling of 82389871 in words is "eighty-two million, three hundred eighty-nine thousand, eight hundred seventy-one".