11404381 has 8 divisors (see below), whose sum is σ = 11733984. Its totient is φ = 11079120.

The previous prime is 11404357. The next prime is 11404391. The reversal of 11404381 is 18340411.

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

It is not a de Polignac number, because 11404381 - 2²¹ = 9307229 is a prime.

It is a super-2 number, since 2×11404381² = 260119811986322, which contains 22 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 (11404301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4666 + ... + 6676.

It is an arithmetic number, because the mean of its divisors is an integer number (1466748).

Almost surely, 2^11404381 is an apocalyptic number.

It is an amenable number.

11404381 is a deficient number, since it is larger than the sum of its proper divisors (329603).

11404381 is a wasteful number, since it uses less digits than its factorization.

11404381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2171.

The product of its (nonzero) digits is 384, while the sum is 22.

The square root of 11404381 is about 3377.0373110169. The cubic root of 11404381 is about 225.0905380490.

Adding to 11404381 its reverse (18340411), we get a palindrome (29744792).

The spelling of 11404381 in words is "eleven million, four hundred four thousand, three hundred eighty-one".