1349330209 has 4 divisors (see below), whose sum is σ = 1349692740. Its totient is φ = 1348967680.

The previous prime is 1349330173. The next prime is 1349330231. The reversal of 1349330209 is 9020339431.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9020339431 = 59 ⋅152887109.

It can be written as a sum of positive squares in 2 ways, for example, as 269879184 + 1079451025 = 16428^2 + 32855^2 .

It is a cyclic number.

It is not a de Polignac number, because 1349330209 - 2¹¹ = 1349328161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1349334209) 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, 175624 + ... + 183145.

It is an arithmetic number, because the mean of its divisors is an integer number (337423185).

Almost surely, 2^1349330209 is an apocalyptic number.

It is an amenable number.

1349330209 is a deficient number, since it is larger than the sum of its proper divisors (362531).

1349330209 is an equidigital number, since it uses as much as digits as its factorization.

1349330209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 362530.

The product of its (nonzero) digits is 17496, while the sum is 34.

The square root of 1349330209 is about 36733.2303098979. The cubic root of 1349330209 is about 1105.0266392710.

The spelling of 1349330209 in words is "one billion, three hundred forty-nine million, three hundred thirty thousand, two hundred nine".