1289045 has 8 divisors (see below), whose sum is σ = 1562496. Its totient is φ = 1020816.

The previous prime is 1289039. The next prime is 1289053. The reversal of 1289045 is 5409821.

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 1289045 - 2⁶ = 1288981 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1288999 and 1289017.

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, 737 + ... + 1766.

It is an arithmetic number, because the mean of its divisors is an integer number (195312).

2^1289045 is an apocalyptic number.

It is an amenable number.

1289045 is a deficient number, since it is larger than the sum of its proper divisors (273451).

1289045 is a wasteful number, since it uses less digits than its factorization.

1289045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2611.

The product of its (nonzero) digits is 2880, while the sum is 29.

The square root of 1289045 is about 1135.3611760140. The cubic root of 1289045 is about 108.8318536436.

The spelling of 1289045 in words is "one million, two hundred eighty-nine thousand, forty-five".