349659409 has 16 divisors (see below), whose sum is σ = 411765120. Its totient is φ = 293560960.

The previous prime is 349659397. The next prime is 349659419. The reversal of 349659409 is 904956943.

It is not a de Polignac number, because 349659409 - 2¹⁹ = 349135121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (349659419) 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 15 ways as a sum of consecutive naturals, for example, 16492 + ... + 31165.

It is an arithmetic number, because the mean of its divisors is an integer number (25735320).

Almost surely, 2^349659409 is an apocalyptic number.

It is an amenable number.

349659409 is a deficient number, since it is larger than the sum of its proper divisors (62105711).

349659409 is a wasteful number, since it uses less digits than its factorization.

349659409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47720.

The product of its (nonzero) digits is 1049760, while the sum is 49.

The square root of 349659409 is about 18699.1820409343. The cubic root of 349659409 is about 704.5012041096.

The spelling of 349659409 in words is "three hundred forty-nine million, six hundred fifty-nine thousand, four hundred nine".