11887999 has 8 divisors (see below), whose sum is σ = 12456000. Its totient is φ = 11330592.

The previous prime is 11887979. The next prime is 11888017. The reversal of 11887999 is 99978811.

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 11887999 - 2¹⁵ = 11855231 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 (11887919) 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, 304 + ... + 4885.

It is an arithmetic number, because the mean of its divisors is an integer number (1557000).

Almost surely, 2^11887999 is an apocalyptic number.

11887999 is a deficient number, since it is larger than the sum of its proper divisors (568001).

11887999 is an equidigital number, since it uses as much as digits as its factorization.

11887999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5297.

The product of its digits is 326592, while the sum is 52.

The square root of 11887999 is about 3447.8977653057. The cubic root of 11887999 is about 228.2283479687.

The spelling of 11887999 in words is "eleven million, eight hundred eighty-seven thousand, nine hundred ninety-nine".