349720086 has 16 divisors (see below), whose sum is σ = 703733184. Its totient is φ = 115857864.

The previous prime is 349720003. The next prime is 349720087. The reversal of 349720086 is 680027943.

349720086 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (349720087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 177816 + ... + 179771.

It is an arithmetic number, because the mean of its divisors is an integer number (43983324).

Almost surely, 2^349720086 is an apocalyptic number.

349720086 is an abundant number, since it is smaller than the sum of its proper divisors (354013098).

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

349720086 is a wasteful number, since it uses less digits than its factorization.

349720086 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 357755.

The product of its (nonzero) digits is 72576, while the sum is 39.

The square root of 349720086 is about 18700.8044212007. The cubic root of 349720086 is about 704.5419528554.

The spelling of 349720086 in words is "three hundred forty-nine million, seven hundred twenty thousand, eighty-six".