1289315 has 4 divisors (see below), whose sum is σ = 1547184. Its totient is φ = 1031448.

The previous prime is 1289303. The next prime is 1289329. The reversal of 1289315 is 5139821.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1289315 - 2¹⁰ = 1288291 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 128927 + ... + 128936.

It is an arithmetic number, because the mean of its divisors is an integer number (386796).

2^1289315 is an apocalyptic number.

1289315 is a deficient number, since it is larger than the sum of its proper divisors (257869).

1289315 is an equidigital number, since it uses as much as digits as its factorization.

1289315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257868.

The product of its digits is 2160, while the sum is 29.

The square root of 1289315 is about 1135.4800746821. The cubic root of 1289315 is about 108.8394516584.

The spelling of 1289315 in words is "one million, two hundred eighty-nine thousand, three hundred fifteen".