1289994 has 16 divisors (see below), whose sum is σ = 2731968. Its totient is φ = 404672.

The previous prime is 1289971. The next prime is 1290013. The reversal of 1289994 is 4999821.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6222 + ... + 6425.

It is an arithmetic number, because the mean of its divisors is an integer number (170748).

2^1289994 is an apocalyptic number.

1289994 is an abundant number, since it is smaller than the sum of its proper divisors (1441974).

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

1289994 is a wasteful number, since it uses less digits than its factorization.

1289994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12669.

The product of its digits is 46656, while the sum is 42.

The square root of 1289994 is about 1135.7790278043. The cubic root of 1289994 is about 108.8585545718.

The spelling of 1289994 in words is "one million, two hundred eighty-nine thousand, nine hundred ninety-four".