82909871 has 8 divisors (see below), whose sum is σ = 94379904. Its totient is φ = 72095320.

The previous prime is 82909847. The next prime is 82909889. The reversal of 82909871 is 17890928.

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

It is not a de Polignac number, because 82909871 - 2⁶ = 82909807 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 (82909571) 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, 163601 + ... + 164106.

It is an arithmetic number, because the mean of its divisors is an integer number (11797488).

Almost surely, 2^82909871 is an apocalyptic number.

82909871 is a deficient number, since it is larger than the sum of its proper divisors (11470033).

82909871 is a wasteful number, since it uses less digits than its factorization.

82909871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 327741.

The product of its (nonzero) digits is 72576, while the sum is 44.

The square root of 82909871 is about 9105.4857640875. The cubic root of 82909871 is about 436.0491187683.

The spelling of 82909871 in words is "eighty-two million, nine hundred nine thousand, eight hundred seventy-one".