1363409 has 2 divisors, whose sum is σ = 1363410. Its totient is φ = 1363408.

The previous prime is 1363403. The next prime is 1363429. The reversal of 1363409 is 9043631.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1203409 + 160000 = 1097^2 + 400^2 .

It is a cyclic number.

It is not a de Polignac number, because 1363409 - 2⁴ = 1363393 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1363403) by changing a digit.

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 as a sum of consecutive naturals, namely, 681704 + 681705.

It is an arithmetic number, because the mean of its divisors is an integer number (681705).

2^1363409 is an apocalyptic number.

It is an amenable number.

1363409 is a deficient number, since it is larger than the sum of its proper divisors (1).

1363409 is an equidigital number, since it uses as much as digits as its factorization.

1363409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1944, while the sum is 26.

The square root of 1363409 is about 1167.6510608911. The cubic root of 1363409 is about 110.8856599294.

The spelling of 1363409 in words is "one million, three hundred sixty-three thousand, four hundred nine".