349086805 has 16 divisors (see below), whose sum is σ = 426461184. Its totient is φ = 274276800.

The previous prime is 349086769. The next prime is 349086821. The reversal of 349086805 is 508680943.

It is not a de Polignac number, because 349086805 - 2⁹ = 349086293 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61414 + ... + 66856.

It is an arithmetic number, because the mean of its divisors is an integer number (26653824).

Almost surely, 2^349086805 is an apocalyptic number.

It is an amenable number.

349086805 is a deficient number, since it is larger than the sum of its proper divisors (77374379).

349086805 is a wasteful number, since it uses less digits than its factorization.

349086805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5676.

The product of its (nonzero) digits is 207360, while the sum is 43.

The square root of 349086805 is about 18683.8648303824. The cubic root of 349086805 is about 704.1164290961.

The spelling of 349086805 in words is "three hundred forty-nine million, eighty-six thousand, eight hundred five".