1133987 has 4 divisors (see below), whose sum is σ = 1173120. Its totient is φ = 1094856.

The previous prime is 1133971. The next prime is 1133989. The reversal of 1133987 is 7893311.

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 1133987 - 2⁴ = 1133971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1133989) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19523 + ... + 19580.

It is an arithmetic number, because the mean of its divisors is an integer number (293280).

2^1133987 is an apocalyptic number.

1133987 is a deficient number, since it is larger than the sum of its proper divisors (39133).

1133987 is an equidigital number, since it uses as much as digits as its factorization.

1133987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39132.

The product of its digits is 4536, while the sum is 32.

The square root of 1133987 is about 1064.8882570486. Note that the first 3 decimals coincide. The cubic root of 1133987 is about 104.2804008588.

The spelling of 1133987 in words is "one million, one hundred thirty-three thousand, nine hundred eighty-seven".