1283998 has 16 divisors (see below), whose sum is σ = 2036736. Its totient is φ = 605880.

The previous prime is 1283983. The next prime is 1284007. The reversal of 1283998 is 8993821.

It is a self number, because there is not a number n which added to its sum of digits gives 1283998.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4603 + ... + 4873.

It is an arithmetic number, because the mean of its divisors is an integer number (127296).

2^1283998 is an apocalyptic number.

1283998 is a deficient number, since it is larger than the sum of its proper divisors (752738).

1283998 is a wasteful number, since it uses less digits than its factorization.

1283998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 399.

The product of its digits is 31104, while the sum is 40.

The square root of 1283998 is about 1133.1363554312. The cubic root of 1283998 is about 108.6896313558.

The spelling of 1283998 in words is "one million, two hundred eighty-three thousand, nine hundred ninety-eight".