1379844 has 18 divisors (see below), whose sum is σ = 3488030. Its totient is φ = 459936.

The previous prime is 1379821. The next prime is 1379857. The reversal of 1379844 is 4489731.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1166400 + 213444 = 1080^2 + 462^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 38329 = 1379844 / (1 + 3 + 7 + 9 + 8 + 4 + 4).

It is a junction number, because it is equal to n+sod(n) for n = 1379799 and 1379808.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 19129 + ... + 19200.

2^1379844 is an apocalyptic number.

It is an amenable number.

1379844 is an abundant number, since it is smaller than the sum of its proper divisors (2108186).

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

1379844 is a wasteful number, since it uses less digits than its factorization.

1379844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38339 (or 38334 counting only the distinct ones).

The product of its digits is 24192, while the sum is 36.

The square root of 1379844 is about 1174.6676125611. The cubic root of 1379844 is about 111.3294328138.

The spelling of 1379844 in words is "one million, three hundred seventy-nine thousand, eight hundred forty-four".