1309089 has 16 divisors (see below), whose sum is σ = 1854720. Its totient is φ = 819840.

The previous prime is 1309079. The next prime is 1309093. The reversal of 1309089 is 9809031.

It is a happy number.

It is not a de Polignac number, because 1309089 - 2⁴ = 1309073 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1309039) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3384 + ... + 3750.

It is an arithmetic number, because the mean of its divisors is an integer number (115920).

2^1309089 is an apocalyptic number.

It is an amenable number.

1309089 is a deficient number, since it is larger than the sum of its proper divisors (545631).

1309089 is a wasteful number, since it uses less digits than its factorization.

1309089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 440.

The product of its (nonzero) digits is 1944, while the sum is 30.

The square root of 1309089 is about 1144.1542728146. The cubic root of 1309089 is about 109.3930483413.

The spelling of 1309089 in words is "one million, three hundred nine thousand, eighty-nine".