349838009 has 4 divisors (see below), whose sum is σ = 350534016. Its totient is φ = 349142004.

The previous prime is 349837913. The next prime is 349838011. The reversal of 349838009 is 900838943.

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 a de Polignac number, because none of the positive numbers 2^k-349838009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (349838039) 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, 347249 + ... + 348254.

It is an arithmetic number, because the mean of its divisors is an integer number (87633504).

Almost surely, 2^349838009 is an apocalyptic number.

It is an amenable number.

349838009 is a deficient number, since it is larger than the sum of its proper divisors (696007).

349838009 is an equidigital number, since it uses as much as digits as its factorization.

349838009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 696006.

The product of its (nonzero) digits is 186624, while the sum is 44.

The square root of 349838009 is about 18703.9570412253. The cubic root of 349838009 is about 704.6211327173.

The spelling of 349838009 in words is "three hundred forty-nine million, eight hundred thirty-eight thousand, nine".