11889993 has 8 divisors (see below), whose sum is σ = 15877888. Its totient is φ = 7914384.

The previous prime is 11889989. The next prime is 11890001. The reversal of 11889993 is 39998811.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11889993 - 2² = 11889989 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11889923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 505 + ... + 4902.

It is an arithmetic number, because the mean of its divisors is an integer number (1984736).

Almost surely, 2^11889993 is an apocalyptic number.

It is an amenable number.

11889993 is a deficient number, since it is larger than the sum of its proper divisors (3987895).

11889993 is an equidigital number, since it uses as much as digits as its factorization.

11889993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6143.

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

The square root of 11889993 is about 3448.1869148873. The cubic root of 11889993 is about 228.2411076682.

The spelling of 11889993 in words is "eleven million, eight hundred eighty-nine thousand, nine hundred ninety-three".