982921 has 4 divisors (see below), whose sum is σ = 985600. Its totient is φ = 980244.

The previous prime is 982909. The next prime is 982931. The reversal of 982921 is 129289.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-982921 is a prime.

It is a super-2 number, since 2×982921² = 1932267384482, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (982931) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 681 + ... + 1558.

It is an arithmetic number, because the mean of its divisors is an integer number (246400).

2⁹⁸²⁹²¹ is an apocalyptic number.

It is an amenable number.

982921 is a deficient number, since it is larger than the sum of its proper divisors (2679).

982921 is a wasteful number, since it uses less digits than its factorization.

982921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2678.

The product of its digits is 2592, while the sum is 31.

The square root of 982921 is about 991.4237237428. The cubic root of 982921 is about 99.4274278686.

The spelling of 982921 in words is "nine hundred eighty-two thousand, nine hundred twenty-one".