349709836 has 24 divisors (see below), whose sum is σ = 707283360. Its totient is φ = 148190592.

The previous prime is 349709803. The next prime is 349709837. The reversal of 349709836 is 638907943.

It is a self number, because there is not a number n which added to its sum of digits gives 349709836.

It is not an unprimeable number, because it can be changed into a prime (349709837) by changing a digit.

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, 67675 + ... + 72658.

It is an arithmetic number, because the mean of its divisors is an integer number (29470140).

Almost surely, 2^349709836 is an apocalyptic number.

It is an amenable number.

349709836 is an abundant number, since it is smaller than the sum of its proper divisors (357573524).

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

349709836 is a wasteful number, since it uses less digits than its factorization.

349709836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140433 (or 140431 counting only the distinct ones).

The product of its (nonzero) digits is 979776, while the sum is 49.

The square root of 349709836 is about 18700.5303668105. The cubic root of 349709836 is about 704.5350696119.

The spelling of 349709836 in words is "three hundred forty-nine million, seven hundred nine thousand, eight hundred thirty-six".