11921383 has 8 divisors (see below), whose sum is σ = 12475008. Its totient is φ = 11370744.

The previous prime is 11921381. The next prime is 11921389. The reversal of 11921383 is 38312911.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11921383 - 2¹ = 11921381 is a prime.

It is a super-4 number, since 4×11921383⁴ (a number of 29 digits) contains 4444 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11921381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13060 + ... + 13942.

It is an arithmetic number, because the mean of its divisors is an integer number (1559376).

Almost surely, 2^11921383 is an apocalyptic number.

11921383 is a deficient number, since it is larger than the sum of its proper divisors (553625).

11921383 is an equidigital number, since it uses as much as digits as its factorization.

11921383 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1493.

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

The square root of 11921383 is about 3452.7355821146. The cubic root of 11921383 is about 228.4417860249.

The spelling of 11921383 in words is "eleven million, nine hundred twenty-one thousand, three hundred eighty-three".