11383921 has 4 divisors (see below), whose sum is σ = 11776500. Its totient is φ = 10991344.

The previous prime is 11383891. The next prime is 11383951. The reversal of 11383921 is 12938311.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12938311 = 2833 ⋅4567.

It is an interprime number because it is at equal distance from previous prime (11383891) and next prime (11383951).

It can be written as a sum of positive squares in 2 ways, for example, as 7639696 + 3744225 = 2764^2 + 1935^2 .

It is a cyclic number.

It is not a de Polignac number, because 11383921 - 2¹⁷ = 11252849 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 11383921.

It is not an unprimeable number, because it can be changed into a prime (11383951) 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, 196246 + ... + 196303.

It is an arithmetic number, because the mean of its divisors is an integer number (2944125).

Almost surely, 2^11383921 is an apocalyptic number.

It is an amenable number.

11383921 is a deficient number, since it is larger than the sum of its proper divisors (392579).

11383921 is an equidigital number, since it uses as much as digits as its factorization.

11383921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 392578.

The product of its digits is 1296, while the sum is 28.

The square root of 11383921 is about 3374.0066686360. The cubic root of 11383921 is about 224.9558497735.

The spelling of 11383921 in words is "eleven million, three hundred eighty-three thousand, nine hundred twenty-one".