349819686 has 24 divisors (see below), whose sum is σ = 782393664. Its totient is φ = 112844880.

The previous prime is 349819681. The next prime is 349819703. The reversal of 349819686 is 686918943.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (349819681) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 312901 + ... + 314016.

It is an arithmetic number, because the mean of its divisors is an integer number (32599736).

Almost surely, 2^349819686 is an apocalyptic number.

349819686 is an abundant number, since it is smaller than the sum of its proper divisors (432573978).

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

349819686 is a wasteful number, since it uses less digits than its factorization.

349819686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 626956 (or 626953 counting only the distinct ones).

The product of its digits is 2239488, while the sum is 54.

The square root of 349819686 is about 18703.4672186737. The cubic root of 349819686 is about 704.6088308346.

The spelling of 349819686 in words is "three hundred forty-nine million, eight hundred nineteen thousand, six hundred eighty-six".