11744821 has 4 divisors (see below), whose sum is σ = 12812544. Its totient is φ = 10677100.

The previous prime is 11744813. The next prime is 11744827. The reversal of 11744821 is 12844711.

11744821 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 an emirpimes, since its reverse is a distinct semiprime: 12844711 = 11 ⋅1167701.

It is a cyclic number.

It is not a de Polignac number, because 11744821 - 2³ = 11744813 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11744821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11744827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 533845 + ... + 533866.

It is an arithmetic number, because the mean of its divisors is an integer number (3203136).

Almost surely, 2^11744821 is an apocalyptic number.

11744821 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11744821 is a deficient number, since it is larger than the sum of its proper divisors (1067723).

11744821 is a wasteful number, since it uses less digits than its factorization.

11744821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1067722.

The product of its digits is 1792, while the sum is 28.

The square root of 11744821 is about 3427.0717821487. The cubic root of 11744821 is about 227.3083907719.

It can be divided in two parts, 1174 and 4821, that added together give a palindrome (5995).

The spelling of 11744821 in words is "eleven million, seven hundred forty-four thousand, eight hundred twenty-one".