1393844 has 6 divisors (see below), whose sum is σ = 2439234. Its totient is φ = 696920.

The previous prime is 1393837. The next prime is 1393871. The reversal of 1393844 is 4483931.

It can be written as a sum of positive squares in only one way, i.e., 1392400 + 1444 = 1180^2 + 38^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1393844.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 174227 + ... + 174234.

It is an arithmetic number, because the mean of its divisors is an integer number (406539).

2^1393844 is an apocalyptic number.

It is an amenable number.

1393844 is a deficient number, since it is larger than the sum of its proper divisors (1045390).

1393844 is a wasteful number, since it uses less digits than its factorization.

1393844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 348465 (or 348463 counting only the distinct ones).

The product of its digits is 10368, while the sum is 32.

The square root of 1393844 is about 1180.6117058542. The cubic root of 1393844 is about 111.7046854530.

The spelling of 1393844 in words is "one million, three hundred ninety-three thousand, eight hundred forty-four".