1338469009 has 4 divisors (see below), whose sum is σ = 1339729216. Its totient is φ = 1337208804.

The previous prime is 1338468979. The next prime is 1338469019. The reversal of 1338469009 is 9009648331.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1338469009 - 2⁵ = 1338468977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1338469019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 628509 + ... + 630634.

It is an arithmetic number, because the mean of its divisors is an integer number (334932304).

Almost surely, 2^1338469009 is an apocalyptic number.

It is an amenable number.

1338469009 is a deficient number, since it is larger than the sum of its proper divisors (1260207).

1338469009 is a wasteful number, since it uses less digits than its factorization.

1338469009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1260206.

The product of its (nonzero) digits is 139968, while the sum is 43.

The square root of 1338469009 is about 36585.0927154763. The cubic root of 1338469009 is about 1102.0537414380.

The spelling of 1338469009 in words is "one billion, three hundred thirty-eight million, four hundred sixty-nine thousand, nine".