1350409 has 4 divisors (see below), whose sum is σ = 1360404. Its totient is φ = 1340416.

The previous prime is 1350403. The next prime is 1350449. The reversal of 1350409 is 9040531.

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

It can be written as a sum of positive squares in 2 ways, for example, as 644809 + 705600 = 803^2 + 840^2 .

It is a cyclic number.

It is not a de Polignac number, because 1350409 - 2⁹ = 1349897 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1350409.

It is not an unprimeable number, because it can be changed into a prime (1350403) 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, 4792 + ... + 5065.

It is an arithmetic number, because the mean of its divisors is an integer number (340101).

2^1350409 is an apocalyptic number.

It is an amenable number.

1350409 is a deficient number, since it is larger than the sum of its proper divisors (9995).

1350409 is an equidigital number, since it uses as much as digits as its factorization.

1350409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9994.

The product of its (nonzero) digits is 540, while the sum is 22.

The square root of 1350409 is about 1162.0709961100. The cubic root of 1350409 is about 110.5321050832.

The spelling of 1350409 in words is "one million, three hundred fifty thousand, four hundred nine".