1152909 has 12 divisors (see below), whose sum is σ = 1697436. Its totient is φ = 753792.

The previous prime is 1152887. The next prime is 1152913. The reversal of 1152909 is 9092511.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1010025 + 142884 = 1005^2 + 378^2 .

It is not a de Polignac number, because 1152909 - 2⁸ = 1152653 is a prime.

1152909 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1152979) 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 11 ways as a sum of consecutive naturals, for example, 732 + ... + 1685.

It is an arithmetic number, because the mean of its divisors is an integer number (141453).

2^1152909 is an apocalyptic number.

It is an amenable number.

1152909 is a deficient number, since it is larger than the sum of its proper divisors (544527).

1152909 is a wasteful number, since it uses less digits than its factorization.

1152909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2476 (or 2473 counting only the distinct ones).

The product of its (nonzero) digits is 810, while the sum is 27.

The square root of 1152909 is about 1073.7360010729. The cubic root of 1152909 is about 104.8572209028.

The spelling of 1152909 in words is "one million, one hundred fifty-two thousand, nine hundred nine".