1982489 has 8 divisors (see below), whose sum is σ = 2111688. Its totient is φ = 1854720.

The previous prime is 1982471. The next prime is 1982501. The reversal of 1982489 is 9842891.

It can be written as a sum of positive squares in 4 ways, for example, as 25 + 1982464 = 5^2 + 1408^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 1982489 - 2¹² = 1978393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1982989) 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, 4499 + ... + 4919.

It is an arithmetic number, because the mean of its divisors is an integer number (263961).

2^1982489 is an apocalyptic number.

It is an amenable number.

1982489 is a deficient number, since it is larger than the sum of its proper divisors (129199).

1982489 is a wasteful number, since it uses less digits than its factorization.

1982489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 715.

The product of its digits is 41472, while the sum is 41.

The square root of 1982489 is about 1408.0088778129. The cubic root of 1982489 is about 125.6233186247.

The spelling of 1982489 in words is "one million, nine hundred eighty-two thousand, four hundred eighty-nine".