349689323 has 4 divisors (see below), whose sum is σ = 349955760. Its totient is φ = 349422888.

The previous prime is 349689311. The next prime is 349689343. The reversal of 349689323 is 323986943.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 323986943 = 7 ⋅46283849.

It is a cyclic number.

It is not a de Polignac number, because 349689323 - 2¹² = 349685227 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (349689343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 131240 + ... + 133877.

It is an arithmetic number, because the mean of its divisors is an integer number (87488940).

Almost surely, 2^349689323 is an apocalyptic number.

349689323 is a deficient number, since it is larger than the sum of its proper divisors (266437).

349689323 is a wasteful number, since it uses less digits than its factorization.

349689323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266436.

The product of its digits is 839808, while the sum is 47.

The square root of 349689323 is about 18699.9818983870. The cubic root of 349689323 is about 704.5212939909.

The spelling of 349689323 in words is "three hundred forty-nine million, six hundred eighty-nine thousand, three hundred twenty-three".