11191393 has 4 divisors (see below), whose sum is σ = 11273220. Its totient is φ = 11109568.

The previous prime is 11191381. The next prime is 11191429. The reversal of 11191393 is 39319111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 39319111 = 13 ⋅3024547.

It can be written as a sum of positive squares in 2 ways, for example, as 8720209 + 2471184 = 2953^2 + 1572^2 .

It is a cyclic number.

It is not a de Polignac number, because 11191393 - 2¹⁷ = 11060321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11191333) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40708 + ... + 40981.

It is an arithmetic number, because the mean of its divisors is an integer number (2818305).

Almost surely, 2^11191393 is an apocalyptic number.

It is an amenable number.

11191393 is a deficient number, since it is larger than the sum of its proper divisors (81827).

11191393 is an equidigital number, since it uses as much as digits as its factorization.

11191393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81826.

The product of its digits is 729, while the sum is 28.

The square root of 11191393 is about 3345.3539424103. The cubic root of 11191393 is about 223.6804608970.

The spelling of 11191393 in words is "eleven million, one hundred ninety-one thousand, three hundred ninety-three".