1129986 has 48 divisors (see below), whose sum is σ = 2882880. Its totient is φ = 315360.

The previous prime is 1129963. The next prime is 1129991. The reversal of 1129986 is 6899211.

It is a self number, because there is not a number n which added to its sum of digits gives 1129986.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2355 + ... + 2793.

It is an arithmetic number, because the mean of its divisors is an integer number (60060).

2^1129986 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1129986, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1441440).

1129986 is an abundant number, since it is smaller than the sum of its proper divisors (1752894).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1129986 is a wasteful number, since it uses less digits than its factorization.

1129986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 471 (or 468 counting only the distinct ones).

The product of its digits is 7776, while the sum is 36.

The square root of 1129986 is about 1063.0079962070. The cubic root of 1129986 is about 104.1576135777.

The spelling of 1129986 in words is "one million, one hundred twenty-nine thousand, nine hundred eighty-six".