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1349 = 1971

1349 has 4 divisors (see below), whose sum is σ = 1440. Its totient is φ = 1260.

The previous prime is 1327. The next prime is 1361. The reversal of 1349 is 9431.

1349 is nontrivially palindromic in base 16.

1349 is an esthetic number in base 16, because in such base its adjacent digits differ by 1.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 1349 - 28 = 1093 is a prime.

It is a d-powerful number, because it can be written as 1 + 45 + 35 + 92 .

It is a Duffinian number.

1349 is an undulating number in base 16.

It is a Curzon number.

It is a plaindrome in base 10 and base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1319) 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 3 ways as a sum of consecutive naturals, for example, 17 + ... + 54.

It is an arithmetic number, because the mean of its divisors is an integer number (360).

21349 is an apocalyptic number.

1349 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

1349 is a deficient number, since it is larger than the sum of its proper divisors (91).

1349 is an equidigital number, since it uses as much as digits as its factorization.

1349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90.

The product of its digits is 108, while the sum is 17.

The square root of 1349 is about 36.7287353444. The cubic root of 1349 is about 11.0493649096.

The spelling of 1349 in words is "one thousand, three hundred forty-nine".

Divisors: 1 19 71 1349