Search a number
BaseRepresentation
bin111000001
3121122
413001
53244
62025
71211
oct701
9548
10449
11379
12315
13287
14241
151ee
hex1c1

449 has 2 divisors, whose sum is σ = 450. Its totient is φ = 448.

The previous prime is 443. The next prime is 457. The reversal of 449 is 944.

It can be divided in two parts, 4 and 49, that multiplied together give a square (196 = 142).

449 is nontrivially palindromic in base 16.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 400 + 49 = 20^2 + 7^2 .

It is a cyclic number.

It is not a de Polignac number, because 449 - 24 = 433 is a prime.

It is a Chen prime.

It is a magnanimous number.

449 is an undulating number in base 16.

It is a plaindrome in base 10, base 11 and base 15.

It is not a weakly prime, because it can be changed into another prime (443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 224 + 225.

It is an arithmetic number, because the mean of its divisors is an integer number (225).

It is a Proth number, since it is equal to 7 ⋅ 26 + 1 and 7 < 26.

It is an amenable number.

449 is a deficient number, since it is larger than the sum of its proper divisors (1).

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

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

The product of its digits is 144, while the sum is 17.

The square root of 449 is about 21.1896201004. The cubic root of 449 is about 7.6574137479.

The spelling of 449 in words is "four hundred forty-nine", and thus it is an aban number.