349716786 has 16 divisors (see below), whose sum is σ = 700830144. Its totient is φ = 116339504.

The previous prime is 349716779. The next prime is 349716803. The reversal of 349716786 is 687617943.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54921 + ... + 60956.

It is an arithmetic number, because the mean of its divisors is an integer number (43801884).

Almost surely, 2^349716786 is an apocalyptic number.

349716786 is an abundant number, since it is smaller than the sum of its proper divisors (351113358).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

349716786 is a wasteful number, since it uses less digits than its factorization.

349716786 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116385.

The product of its digits is 1524096, while the sum is 51.

The square root of 349716786 is about 18700.7161894939. The cubic root of 349716786 is about 704.5397368015.

The spelling of 349716786 in words is "three hundred forty-nine million, seven hundred sixteen thousand, seven hundred eighty-six".