1345289 has 4 divisors (see below), whose sum is σ = 1467600. Its totient is φ = 1222980.

The previous prime is 1345277. The next prime is 1345297. The reversal of 1345289 is 9825431.

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.

It is not a de Polignac number, because 1345289 - 2⁴ = 1345273 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1345229) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61139 + ... + 61160.

It is an arithmetic number, because the mean of its divisors is an integer number (366900).

2^1345289 is an apocalyptic number.

It is an amenable number.

1345289 is a deficient number, since it is larger than the sum of its proper divisors (122311).

1345289 is a wasteful number, since it uses less digits than its factorization.

1345289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122310.

The product of its digits is 8640, while the sum is 32.

The square root of 1345289 is about 1159.8659405293. The cubic root of 1345289 is about 110.3922360727.

The spelling of 1345289 in words is "one million, three hundred forty-five thousand, two hundred eighty-nine".