1065409 has 2 divisors, whose sum is σ = 1065410. Its totient is φ = 1065408.

The previous prime is 1065391. The next prime is 1065433. The reversal of 1065409 is 9045601.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 815409 + 250000 = 903^2 + 500^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1065409 is a prime.

It is a super-2 number, since 2×1065409² = 2270192674562, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1065469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 532704 + 532705.

It is an arithmetic number, because the mean of its divisors is an integer number (532705).

2^1065409 is an apocalyptic number.

It is an amenable number.

1065409 is a deficient number, since it is larger than the sum of its proper divisors (1).

1065409 is an equidigital number, since it uses as much as digits as its factorization.

1065409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 1065409 is about 1032.1865141533. The cubic root of 1065409 is about 102.1344184501.

The spelling of 1065409 in words is "one million, sixty-five thousand, four hundred nine".