1187959 has 8 divisors (see below), whose sum is σ = 1236368. Its totient is φ = 1140480.

The previous prime is 1187947. The next prime is 1187981. The reversal of 1187959 is 9597811.

It is a happy number.

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-1187959 is a prime.

It is a super-2 number, since 2×1187959² = 2822493171362, which contains 22 as substring.

It is a Duffinian number.

1187959 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1187939) 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, 3424 + ... + 3754.

It is an arithmetic number, because the mean of its divisors is an integer number (154546).

2^1187959 is an apocalyptic number.

1187959 is a deficient number, since it is larger than the sum of its proper divisors (48409).

1187959 is an equidigital number, since it uses as much as digits as its factorization.

1187959 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 465.

The product of its digits is 22680, while the sum is 40.

The square root of 1187959 is about 1089.9353191818. The cubic root of 1187959 is about 105.9092316596.

The spelling of 1187959 in words is "one million, one hundred eighty-seven thousand, nine hundred fifty-nine".