1343886209 has 4 divisors (see below), whose sum is σ = 1357740804. Its totient is φ = 1330031616.

The previous prime is 1343886199. The next prime is 1343886221. The reversal of 1343886209 is 9026883431.

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 637815025 + 706071184 = 25255^2 + 26572^2 .

It is a cyclic number.

It is not a de Polignac number, because 1343886209 - 2⁸ = 1343885953 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1343886209.

It is not an unprimeable number, because it can be changed into a prime (1343886289) 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, 6927152 + ... + 6927345.

It is an arithmetic number, because the mean of its divisors is an integer number (339435201).

Almost surely, 2^1343886209 is an apocalyptic number.

It is an amenable number.

1343886209 is a deficient number, since it is larger than the sum of its proper divisors (13854595).

1343886209 is an equidigital number, since it uses as much as digits as its factorization.

1343886209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13854594.

The product of its (nonzero) digits is 248832, while the sum is 44.

The square root of 1343886209 is about 36659.0535747992. The cubic root of 1343886209 is about 1103.5385247587.

The spelling of 1343886209 in words is "one billion, three hundred forty-three million, eight hundred eighty-six thousand, two hundred nine".