1129609 has 8 divisors (see below), whose sum is σ = 1256192. Its totient is φ = 1008720.

The previous prime is 1129603. The next prime is 1129619. The reversal of 1129609 is 9069211.

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

It is a cyclic number.

It is not a de Polignac number, because 1129609 - 2⁵ = 1129577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1129603) 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, 999 + ... + 1804.

It is an arithmetic number, because the mean of its divisors is an integer number (157024).

2^1129609 is an apocalyptic number.

It is an amenable number.

1129609 is a deficient number, since it is larger than the sum of its proper divisors (126583).

1129609 is a wasteful number, since it uses less digits than its factorization.

1129609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2847.

The product of its (nonzero) digits is 972, while the sum is 28.

The square root of 1129609 is about 1062.8306544318. The cubic root of 1129609 is about 104.1460288359.

The spelling of 1129609 in words is "one million, one hundred twenty-nine thousand, six hundred nine".