1289269 has 4 divisors (see below), whose sum is σ = 1319296. Its totient is φ = 1259244.

The previous prime is 1289261. The next prime is 1289273. The reversal of 1289269 is 9629821.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1289269 - 2³ = 1289261 is a prime.

It is a super-2 number, since 2×1289269² = 3324429108722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1289261) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 14949 + ... + 15034.

It is an arithmetic number, because the mean of its divisors is an integer number (329824).

2^1289269 is an apocalyptic number.

It is an amenable number.

1289269 is a deficient number, since it is larger than the sum of its proper divisors (30027).

1289269 is an equidigital number, since it uses as much as digits as its factorization.

1289269 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30026.

The product of its digits is 15552, while the sum is 37.

The square root of 1289269 is about 1135.4598187519. The cubic root of 1289269 is about 108.8381572568.

The spelling of 1289269 in words is "one million, two hundred eighty-nine thousand, two hundred sixty-nine".