981982 has 4 divisors (see below), whose sum is σ = 1472976. Its totient is φ = 490990.

The previous prime is 981979. The next prime is 981983. The reversal of 981982 is 289189.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (981983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 245494 + ... + 245497.

It is an arithmetic number, because the mean of its divisors is an integer number (368244).

2⁹⁸¹⁹⁸² is an apocalyptic number.

981982 is a deficient number, since it is larger than the sum of its proper divisors (490994).

981982 is a wasteful number, since it uses less digits than its factorization.

981982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 490993.

The product of its digits is 10368, while the sum is 37.

The square root of 981982 is about 990.9500491952. The cubic root of 981982 is about 99.3957562487.

It can be divided in two parts, 98 and 1982, that added together give a triangular number (2080 = T₆₄).

The spelling of 981982 in words is "nine hundred eighty-one thousand, nine hundred eighty-two".