11988895 has 8 divisors (see below), whose sum is σ = 14405760. Its totient is φ = 9578400.

The previous prime is 11988887. The next prime is 11988917. The reversal of 11988895 is 59888911.

11988895 is nontrivially palindromic in base 11.

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

It is not a de Polignac number, because 11988895 - 2³ = 11988887 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5170 + ... + 7120.

It is an arithmetic number, because the mean of its divisors is an integer number (1800720).

Almost surely, 2^11988895 is an apocalyptic number.

11988895 is a deficient number, since it is larger than the sum of its proper divisors (2416865).

11988895 is a wasteful number, since it uses less digits than its factorization.

11988895 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3185.

The product of its digits is 207360, while the sum is 49.

The square root of 11988895 is about 3462.4983754509. The cubic root of 11988895 is about 228.8722042051.

The spelling of 11988895 in words is "eleven million, nine hundred eighty-eight thousand, eight hundred ninety-five".