349669009 has 4 divisors (see below), whose sum is σ = 350808304. Its totient is φ = 348529716.

The previous prime is 349669003. The next prime is 349669043. The reversal of 349669009 is 900966943.

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: 900966943 = 97 ⋅9288319.

It is a cyclic number.

It is not a de Polignac number, because 349669009 - 2¹⁹ = 349144721 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 349669009.

It is not an unprimeable number, because it can be changed into a prime (349669003) 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, 569187 + ... + 569800.

It is an arithmetic number, because the mean of its divisors is an integer number (87702076).

Almost surely, 2^349669009 is an apocalyptic number.

It is an amenable number.

349669009 is a deficient number, since it is larger than the sum of its proper divisors (1139295).

349669009 is a wasteful number, since it uses less digits than its factorization.

349669009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1139294.

The product of its (nonzero) digits is 314928, while the sum is 46.

The square root of 349669009 is about 18699.4387348926. The cubic root of 349669009 is about 704.5076514786.

The spelling of 349669009 in words is "three hundred forty-nine million, six hundred sixty-nine thousand, nine".