11811393 has 16 divisors (see below), whose sum is σ = 19089600. Its totient is φ = 7158240.

The previous prime is 11811391. The next prime is 11811419. The reversal of 11811393 is 39311811.

It is a happy number.

It is not a de Polignac number, because 11811393 - 2¹ = 11811391 is a prime.

It is a super-3 number, since 3×11811393³ (a number of 22 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (11811391) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19588 + ... + 20181.

It is an arithmetic number, because the mean of its divisors is an integer number (1193100).

Almost surely, 2^11811393 is an apocalyptic number.

It is an amenable number.

11811393 is a deficient number, since it is larger than the sum of its proper divisors (7278207).

11811393 is a wasteful number, since it uses less digits than its factorization.

11811393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39789 (or 39783 counting only the distinct ones).

The product of its digits is 648, while the sum is 27.

The square root of 11811393 is about 3436.7707226407. The cubic root of 11811393 is about 227.7370583743.

It can be divided in two parts, 118 and 11393, that added together give a palindrome (11511).

The spelling of 11811393 in words is "eleven million, eight hundred eleven thousand, three hundred ninety-three".