349843009 has 4 divisors (see below), whose sum is σ = 350004016. Its totient is φ = 349682004.

The previous prime is 349843007. The next prime is 349843019. The reversal of 349843009 is 900348943.

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, and also an emirpimes, since its reverse is a distinct semiprime: 900348943 = 13 ⋅69257611.

It is a cyclic number.

It is not a de Polignac number, because 349843009 - 2¹ = 349843007 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (349843007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77199 + ... + 81604.

It is an arithmetic number, because the mean of its divisors is an integer number (87501004).

Almost surely, 2^349843009 is an apocalyptic number.

It is an amenable number.

349843009 is a deficient number, since it is larger than the sum of its proper divisors (161007).

349843009 is a wasteful number, since it uses less digits than its factorization.

349843009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161006.

The product of its (nonzero) digits is 93312, while the sum is 40.

The square root of 349843009 is about 18704.0907023036. The cubic root of 349843009 is about 704.6244895937.

The spelling of 349843009 in words is "three hundred forty-nine million, eight hundred forty-three thousand, nine".