349509 has 8 divisors (see below), whose sum is σ = 470592. Its totient is φ = 230720.

The previous prime is 349507. The next prime is 349519. The reversal of 349509 is 905943.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 349509 - 2¹ = 349507 is a prime.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 349509.

It is not an unprimeable number, because it can be changed into a prime (349507) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 177 + ... + 854.

It is an arithmetic number, because the mean of its divisors is an integer number (58824).

2³⁴⁹⁵⁰⁹ is an apocalyptic number.

It is an amenable number.

349509 is a deficient number, since it is larger than the sum of its proper divisors (121083).

349509 is a wasteful number, since it uses less digits than its factorization.

349509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1147.

The product of its (nonzero) digits is 4860, while the sum is 30.

The square root of 349509 is about 591.1928619326. The cubic root of 349509 is about 70.4400173873.

It can be divided in two parts, 349 and 509, that added together give a palindrome (858).

The spelling of 349509 in words is "three hundred forty-nine thousand, five hundred nine".