11993087 has 4 divisors (see below), whose sum is σ = 12272040. Its totient is φ = 11714136.

The previous prime is 11993083. The next prime is 11993099. The reversal of 11993087 is 78039911.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 78039911 = 17 ⋅4590583.

It is a cyclic number.

It is not a de Polignac number, because 11993087 - 2² = 11993083 is a prime.

It is a Duffinian number.

It is a plaindrome in base 8.

It is a zygodrome in base 8.

It is a self number, because there is not a number n which added to its sum of digits gives 11993087.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11993083) 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, 139412 + ... + 139497.

It is an arithmetic number, because the mean of its divisors is an integer number (3068010).

Almost surely, 2^11993087 is an apocalyptic number.

11993087 is a deficient number, since it is larger than the sum of its proper divisors (278953).

11993087 is an equidigital number, since it uses as much as digits as its factorization.

11993087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278952.

The product of its (nonzero) digits is 13608, while the sum is 38.

The square root of 11993087 is about 3463.1036657888. The cubic root of 11993087 is about 228.8988766793.

The spelling of 11993087 in words is "eleven million, nine hundred ninety-three thousand, eighty-seven".