1289894 has 8 divisors (see below), whose sum is σ = 1987248. Its totient is φ = 627480.

The previous prime is 1289881. The next prime is 1289921. The reversal of 1289894 is 4989821.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8642 + ... + 8789.

It is an arithmetic number, because the mean of its divisors is an integer number (248406).

2^1289894 is an apocalyptic number.

1289894 is a deficient number, since it is larger than the sum of its proper divisors (697354).

1289894 is a wasteful number, since it uses less digits than its factorization.

1289894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17470.

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

The square root of 1289894 is about 1135.7350043034. The cubic root of 1289894 is about 108.8557416035.

The spelling of 1289894 in words is "one million, two hundred eighty-nine thousand, eight hundred ninety-four".