1129865 has 8 divisors (see below), whose sum is σ = 1479168. Its totient is φ = 821680.

The previous prime is 1129861. The next prime is 1129889. The reversal of 1129865 is 5689211.

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

It is not a de Polignac number, because 1129865 - 2² = 1129861 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1129861) 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, 10217 + ... + 10326.

It is an arithmetic number, because the mean of its divisors is an integer number (184896).

2^1129865 is an apocalyptic number.

It is an amenable number.

1129865 is a deficient number, since it is larger than the sum of its proper divisors (349303).

1129865 is a wasteful number, since it uses less digits than its factorization.

1129865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20559.

The product of its digits is 4320, while the sum is 32.

The square root of 1129865 is about 1062.9510807182. The cubic root of 1129865 is about 104.1538956788.

The spelling of 1129865 in words is "one million, one hundred twenty-nine thousand, eight hundred sixty-five".