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11449 = 1072
BaseRepresentation
bin10110010111001
3120201001
42302321
5331244
6125001
745244
oct26271
916631
1011449
118669
126761
135299
14425b
1535d4
hex2cb9

11449 has 3 divisors (see below), whose sum is σ = 11557. Its totient is φ = 11342.

The previous prime is 11447. The next prime is 11467. The reversal of 11449 is 94411.

Multipling 11449 by its product of digits (144), we get a square (1648656 = 12842).

It can be divided in two parts, 1144 and 9, that multiplied together give a triangular number (10296 = T143).

11449 = T106 + T107.

The square root of 11449 is 107.

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

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 94411 = 194969.

It is not a de Polignac number, because 11449 - 21 = 11447 is a prime.

It is a Duffinian number.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (11443) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 54 + ... + 160.

211449 is an apocalyptic number.

11449 is the 107-th square number.

11449 is the 54-th centered octagonal number.

It is an amenable number.

11449 is a deficient number, since it is larger than the sum of its proper divisors (108).

11449 is an frugal number, since it uses more digits than its factorization.

11449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214 (or 107 counting only the distinct ones).

The product of its digits is 144, while the sum is 19.

The cubic root of 11449 is about 22.5383707406.

The spelling of 11449 in words is "eleven thousand, four hundred forty-nine".

Divisors: 1 107 11449