11887399 has 4 divisors (see below), whose sum is σ = 11911536. Its totient is φ = 11863264.

The previous prime is 11887387. The next prime is 11887429. The reversal of 11887399 is 99378811.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11887399 - 2¹³ = 11879207 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11887319) 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 3 ways as a sum of consecutive naturals, for example, 11314 + ... + 12319.

It is an arithmetic number, because the mean of its divisors is an integer number (2977884).

Almost surely, 2^11887399 is an apocalyptic number.

11887399 is a deficient number, since it is larger than the sum of its proper divisors (24137).

11887399 is an equidigital number, since it uses as much as digits as its factorization.

11887399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24136.

The product of its digits is 108864, while the sum is 46.

The square root of 11887399 is about 3447.8107546674. The cubic root of 11887399 is about 228.2245082614.

The spelling of 11887399 in words is "eleven million, eight hundred eighty-seven thousand, three hundred ninety-nine".