1135409 has 8 divisors (see below), whose sum is σ = 1246752. Its totient is φ = 1025440.

The previous prime is 1135403. The next prime is 1135411. The reversal of 1135409 is 9045311.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1135409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1135403) 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, 2342 + ... + 2784.

It is an arithmetic number, because the mean of its divisors is an integer number (155844).

2^1135409 is an apocalyptic number.

It is an amenable number.

1135409 is a deficient number, since it is larger than the sum of its proper divisors (111343).

1135409 is a wasteful number, since it uses less digits than its factorization.

1135409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 687.

The product of its (nonzero) digits is 540, while the sum is 23.

The square root of 1135409 is about 1065.5557235546. Note that the first 3 decimals coincide. The cubic root of 1135409 is about 104.3239712554.

The spelling of 1135409 in words is "one million, one hundred thirty-five thousand, four hundred nine".