1209344 has 22 divisors (see below), whose sum is σ = 2419554. Its totient is φ = 604160.

The previous prime is 1209337. The next prime is 1209347. The reversal of 1209344 is 4439021.

It can be written as a sum of positive squares in only one way, i.e., 1183744 + 25600 = 1088^2 + 160^2 .

It is an Ulam 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 as a sum of consecutive naturals, namely, 434 + ... + 1614.

2^1209344 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1209344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1209777).

1209344 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1209344 is an equidigital number, since it uses as much as digits as its factorization.

1209344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1201 (or 1183 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 1209344 is about 1099.7017777561. The cubic root of 1209344 is about 106.5409630311.

The spelling of 1209344 in words is "one million, two hundred nine thousand, three hundred forty-four".