1280469 has 8 divisors (see below), whose sum is σ = 1723680. Its totient is φ = 845456.

The previous prime is 1280453. The next prime is 1280473. The reversal of 1280469 is 9640821.

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 1280469 - 2⁴ = 1280453 is a prime.

It is a super-2 number, since 2×1280469² = 3279201719922, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1280869) 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 7 ways as a sum of consecutive naturals, for example, 1674 + ... + 2315.

It is an arithmetic number, because the mean of its divisors is an integer number (215460).

2^1280469 is an apocalyptic number.

It is an amenable number.

1280469 is a deficient number, since it is larger than the sum of its proper divisors (443211).

1280469 is a wasteful number, since it uses less digits than its factorization.

1280469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4099.

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 1280469 is about 1131.5781015909. The cubic root of 1280469 is about 108.5899641055.

The spelling of 1280469 in words is "one million, two hundred eighty thousand, four hundred sixty-nine".