82988971 has 6 divisors (see below), whose sum is σ = 89863980. Its totient is φ = 76605048.

The previous prime is 82988957. The next prime is 82988993. The reversal of 82988971 is 17988928.

It is not a de Polignac number, because 82988971 - 2²¹ = 80891819 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82988911) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 245361 + ... + 245698.

It is an arithmetic number, because the mean of its divisors is an integer number (14977330).

Almost surely, 2^82988971 is an apocalyptic number.

82988971 is a deficient number, since it is larger than the sum of its proper divisors (6875009).

82988971 is a wasteful number, since it uses less digits than its factorization.

82988971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 491085 (or 491072 counting only the distinct ones).

The product of its digits is 580608, while the sum is 52.

The square root of 82988971 is about 9109.8282640234. The cubic root of 82988971 is about 436.1877452947.

The spelling of 82988971 in words is "eighty-two million, nine hundred eighty-eight thousand, nine hundred seventy-one".