1139009 has 4 divisors (see below), whose sum is σ = 1152816. Its totient is φ = 1125204.

The previous prime is 1139003. The next prime is 1139011. The reversal of 1139009 is 9009311.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9009311 = 53 ⋅169987.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1139009 is a prime.

It is a super-3 number, since 3×1139009³ = 4433050940831333187, which contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1139003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6779 + ... + 6944.

It is an arithmetic number, because the mean of its divisors is an integer number (288204).

2^1139009 is an apocalyptic number.

It is an amenable number.

1139009 is a deficient number, since it is larger than the sum of its proper divisors (13807).

1139009 is an equidigital number, since it uses as much as digits as its factorization.

1139009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13806.

The product of its (nonzero) digits is 243, while the sum is 23.

The square root of 1139009 is about 1067.2436460340. The cubic root of 1139009 is about 104.4341136689.

The spelling of 1139009 in words is "one million, one hundred thirty-nine thousand, nine".