1129867 has 4 divisors (see below), whose sum is σ = 1137600. Its totient is φ = 1122136.

The previous prime is 1129861. The next prime is 1129889. The reversal of 1129867 is 7689211.

It is a happy number.

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 1129867 - 2³ = 1129859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1129861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3643 + ... + 3940.

It is an arithmetic number, because the mean of its divisors is an integer number (284400).

2^1129867 is an apocalyptic number.

1129867 is a deficient number, since it is larger than the sum of its proper divisors (7733).

1129867 is an equidigital number, since it uses as much as digits as its factorization.

1129867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7732.

The product of its digits is 6048, while the sum is 34.

The square root of 1129867 is about 1062.9520214949. The cubic root of 1129867 is about 104.1539571338.

The spelling of 1129867 in words is "one million, one hundred twenty-nine thousand, eight hundred sixty-seven".