11988993 has 8 divisors (see below), whose sum is σ = 16011648. Its totient is φ = 7979504.

The previous prime is 11988979. The next prime is 11988997. The reversal of 11988993 is 39988911.

11988993 is digitally balanced in base 3, 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 11988993 - 2⁶ = 11988929 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11988997) 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, 921 + ... + 4982.

It is an arithmetic number, because the mean of its divisors is an integer number (2001456).

It is a Proth number, since it is equal to 2927 ⋅ 2¹² + 1 and 2927 < 2¹².

Almost surely, 2^11988993 is an apocalyptic number.

It is an amenable number.

11988993 is a deficient number, since it is larger than the sum of its proper divisors (4022655).

11988993 is an equidigital number, since it uses as much as digits as its factorization.

11988993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6583.

The product of its digits is 139968, while the sum is 48.

The square root of 11988993 is about 3462.5125270532. The cubic root of 11988993 is about 228.8728278215.

The spelling of 11988993 in words is "eleven million, nine hundred eighty-eight thousand, nine hundred ninety-three".