1289982 has 16 divisors (see below), whose sum is σ = 2597760. Its totient is φ = 427032.

The previous prime is 1289971. The next prime is 1290013. The reversal of 1289982 is 2899821.

It is a self number, because there is not a number n which added to its sum of digits gives 1289982.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 319 + ... + 1637.

It is an arithmetic number, because the mean of its divisors is an integer number (162360).

2^1289982 is an apocalyptic number.

1289982 is an abundant number, since it is smaller than the sum of its proper divisors (1307778).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1289982 is a wasteful number, since it uses less digits than its factorization.

1289982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1487.

The product of its digits is 20736, while the sum is 39.

The square root of 1289982 is about 1135.7737450743. The cubic root of 1289982 is about 108.8582170233.

The spelling of 1289982 in words is "one million, two hundred eighty-nine thousand, nine hundred eighty-two".