11171993 has 8 divisors (see below), whose sum is σ = 12943488. Its totient is φ = 9444384.

The previous prime is 11171987. The next prime is 11172001. The reversal of 11171993 is 39917111.

11171993 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 11171993 - 2⁶ = 11171929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11171933) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10421 + ... + 11442.

It is an arithmetic number, because the mean of its divisors is an integer number (1617936).

Almost surely, 2^11171993 is an apocalyptic number.

It is an amenable number.

11171993 is a deficient number, since it is larger than the sum of its proper divisors (1771495).

11171993 is an equidigital number, since it uses as much as digits as its factorization.

11171993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21943.

The product of its digits is 1701, while the sum is 32.

The square root of 11171993 is about 3342.4531410328. The cubic root of 11171993 is about 223.5511379797.

The spelling of 11171993 in words is "eleven million, one hundred seventy-one thousand, nine hundred ninety-three".