118987 has 8 divisors (see below), whose sum is σ = 134640. Its totient is φ = 104160.

The previous prime is 118973. The next prime is 119027. The reversal of 118987 is 789811.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-118987 is a prime.

118987 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (118907) 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, 133 + ... + 505.

It is an arithmetic number, because the mean of its divisors is an integer number (16830).

2¹¹⁸⁹⁸⁷ is an apocalyptic number.

118987 is a deficient number, since it is larger than the sum of its proper divisors (15653).

118987 is a wasteful number, since it uses less digits than its factorization.

118987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 413.

The product of its digits is 4032, while the sum is 34.

The square root of 118987 is about 344.9449231399. The cubic root of 118987 is about 49.1850561617.

It can be divided in two parts, 11 and 8987, that added together give a palindrome (8998).

The spelling of 118987 in words is "one hundred eighteen thousand, nine hundred eighty-seven".