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1444 = 22192
BaseRepresentation
bin10110100100
31222111
4112210
521234
610404
74132
oct2644
91874
101444
1110a3
12a04
13871
14752
15664
hex5a4

1444 has 9 divisors (see below), whose sum is σ = 2667. Its totient is φ = 684.

The previous prime is 1439. The next prime is 1447. The reversal of 1444 is 4441.

Subtracting from 1444 its sum of digits (13), we obtain a triangular number (1431 = T53).

Multipling 1444 by its product of digits (64), we get a square (92416 = 3042).

Adding to 1444 its reverse (4441), we get a palindrome (5885).

It can be divided in two parts, 144 and 4, that multiplied together give a square (576 = 242).

1444 = T37 + T38.

It is a happy number.

The square root of 1444 is 38.

It is a perfect power (a square), and thus also a powerful number.

1444 is an esthetic number in base 5, because in such base its adjacent digits differ by 1.

It is a nude number because it is divisible by every one of its digits.

It is a Duffinian number.

It is a plaindrome in base 10.

It is a nialpdrome in base 13, base 14 and base 15.

It is not an unprimeable number, because it can be changed into a prime (1447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 67 + ... + 85.

1444 is the 38-th square number.

It is an amenable number.

1444 is a deficient number, since it is larger than the sum of its proper divisors (1223).

1444 is a wasteful number, since it uses less digits than its factorization.

1444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42 (or 21 counting only the distinct ones).

The product of its digits is 64, while the sum is 13.

The cubic root of 1444 is about 11.3028786359.

The spelling of 1444 in words is "one thousand, four hundred forty-four", and thus it is an iban number.

Divisors: 1 2 4 19 38 76 361 722 1444