1209343 has 4 divisors (see below), whose sum is σ = 1226448. Its totient is φ = 1192240.

The previous prime is 1209337. The next prime is 1209347. The reversal of 1209343 is 3439021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3439021 = 1667 ⋅2063.

It is a cyclic number.

It is not a de Polignac number, because 1209343 - 2⁵ = 1209311 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1209347) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8446 + ... + 8587.

It is an arithmetic number, because the mean of its divisors is an integer number (306612).

2^1209343 is an apocalyptic number.

1209343 is a deficient number, since it is larger than the sum of its proper divisors (17105).

1209343 is an equidigital number, since it uses as much as digits as its factorization.

1209343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17104.

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 1209343 is about 1099.7013230873. The cubic root of 1209343 is about 106.5409336651.

The spelling of 1209343 in words is "one million, two hundred nine thousand, three hundred forty-three".