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1449 = 32723
BaseRepresentation
bin10110101001
31222200
4112221
521244
610413
74140
oct2651
91880
101449
1110a8
12a09
13876
14757
15669
hex5a9

1449 has 12 divisors (see below), whose sum is σ = 2496. Its totient is φ = 792.

The previous prime is 1447. The next prime is 1451. The reversal of 1449 is 9441.

Subtracting from 1449 its sum of digits (18), we obtain a triangular number (1431 = T53).

It can be divided in two parts, 144 and 9, that multiplied together give a 4-th power (1296 = 64).

1449 is nontrivially palindromic in base 14.

1449 is an esthetic number in base 13, because in such base its adjacent digits differ by 1.

It is an interprime number because it is at equal distance from previous prime (1447) and next prime (1451).

It is not a de Polignac number, because 1449 - 21 = 1447 is a prime.

It is a Smith number, since the sum of its digits (18) coincides with the sum of the digits of its prime factors.

1449 is an undulating number in base 14.

Its product of digits (144) is a multiple of the sum of its prime factors (36).

It is a plaindrome in base 10 and base 15.

It is a nialpdrome in base 13.

It is a congruent number.

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

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 52 + ... + 74.

It is an arithmetic number, because the mean of its divisors is an integer number (208).

21449 is an apocalyptic number.

It is an amenable number.

1449 is a deficient number, since it is larger than the sum of its proper divisors (1047).

1449 is a wasteful number, since it uses less digits than its factorization.

1449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36 (or 33 counting only the distinct ones).

The product of its digits is 144, while the sum is 18.

The square root of 1449 is about 38.0657326213. The cubic root of 1449 is about 11.3159094045.

The spelling of 1449 in words is "one thousand, four hundred forty-nine".

Divisors: 1 3 7 9 21 23 63 69 161 207 483 1449