1326749 has 4 divisors (see below), whose sum is σ = 1351836. Its totient is φ = 1301664.

The previous prime is 1326739. The next prime is 1326757. The reversal of 1326749 is 9476231.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9476231 = 19 ⋅498749.

It can be written as a sum of positive squares in 2 ways, for example, as 504100 + 822649 = 710^2 + 907^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1326749 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1326739) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12464 + ... + 12569.

It is an arithmetic number, because the mean of its divisors is an integer number (337959).

2^1326749 is an apocalyptic number.

It is an amenable number.

1326749 is a deficient number, since it is larger than the sum of its proper divisors (25087).

1326749 is an equidigital number, since it uses as much as digits as its factorization.

1326749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25086.

The product of its digits is 9072, while the sum is 32.

The square root of 1326749 is about 1151.8459098334. The cubic root of 1326749 is about 109.8827676662.

It can be divided in two parts, 13 and 26749, that added together give a palindrome (26762).

The spelling of 1326749 in words is "one million, three hundred twenty-six thousand, seven hundred forty-nine".