1384144 has 10 divisors (see below), whose sum is σ = 2681810. Its totient is φ = 692064.

The previous prime is 1384139. The next prime is 1384171. The reversal of 1384144 is 4414831.

It can be written as a sum of positive squares in only one way, i.e., 1024144 + 360000 = 1012^2 + 600^2 .

It is a super-2 number, since 2×1384144² = 3831709225472, which contains 22 as substring.

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, 43239 + ... + 43270.

It is an arithmetic number, because the mean of its divisors is an integer number (268181).

2^1384144 is an apocalyptic number.

It is an amenable number.

1384144 is a deficient number, since it is larger than the sum of its proper divisors (1297666).

1384144 is an equidigital number, since it uses as much as digits as its factorization.

1384144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86517 (or 86511 counting only the distinct ones).

The product of its digits is 1536, while the sum is 25.

The square root of 1384144 is about 1176.4964938324. The cubic root of 1384144 is about 111.4449579858. Note that the first 3 decimals are identical.

Adding to 1384144 its reverse (4414831), we get a palindrome (5798975).

The spelling of 1384144 in words is "one million, three hundred eighty-four thousand, one hundred forty-four".