91982 has 16 divisors (see below), whose sum is σ = 155952. Its totient is φ = 40320.

The previous prime is 91969. The next prime is 91997. The reversal of 91982 is 28919.

It is a congruent number.

It is an unprimeable number.

91982 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 758 + ... + 870.

It is an arithmetic number, because the mean of its divisors is an integer number (9747).

2⁹¹⁹⁸² is an apocalyptic number.

91982 is a deficient number, since it is larger than the sum of its proper divisors (63970).

91982 is a wasteful number, since it uses less digits than its factorization.

91982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163.

The product of its digits is 1296, while the sum is 29.

The square root of 91982 is about 303.2853441893. The cubic root of 91982 is about 45.1406300166.

It can be divided in two parts, 919 and 82, that added together give a palindrome (1001).

The spelling of 91982 in words is "ninety-one thousand, nine hundred eighty-two".