1316089 has 4 divisors (see below), whose sum is σ = 1393524. Its totient is φ = 1238656.

The previous prime is 1316071. The next prime is 1316099. The reversal of 1316089 is 9806131.

1316089 = 180² + 181² + ... + 213².

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9806131 = 191 ⋅51341.

It can be written as a sum of positive squares in 2 ways, for example, as 837225 + 478864 = 915^2 + 692^2 .

It is a cyclic number.

It is not a de Polignac number, because 1316089 - 2⁷ = 1315961 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1316009) 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, 38692 + ... + 38725.

It is an arithmetic number, because the mean of its divisors is an integer number (348381).

2^1316089 is an apocalyptic number.

It is an amenable number.

1316089 is a deficient number, since it is larger than the sum of its proper divisors (77435).

1316089 is an equidigital number, since it uses as much as digits as its factorization.

1316089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77434.

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 1316089 is about 1147.2092224176. The cubic root of 1316089 is about 109.5876850940.

The spelling of 1316089 in words is "one million, three hundred sixteen thousand, eighty-nine".