349569 has 24 divisors (see below), whose sum is σ = 574560. Its totient is φ = 209880.

The previous prime is 349567. The next prime is 349579. The reversal of 349569 is 965943.

349569 is digitally balanced in base 7, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 349569 - 2¹ = 349567 is a prime.

It is a super-2 number, since 2×349569² = 244396971522, which contains 22 as substring.

349569 is strictly pandigital in base 7.

349569 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (349567) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3214 + ... + 3320.

It is an arithmetic number, because the mean of its divisors is an integer number (23940).

2³⁴⁹⁵⁶⁹ is an apocalyptic number.

It is an amenable number.

349569 is a deficient number, since it is larger than the sum of its proper divisors (224991).

349569 is a wasteful number, since it uses less digits than its factorization.

349569 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138 (or 121 counting only the distinct ones).

The product of its digits is 29160, while the sum is 36.

The square root of 349569 is about 591.2436046166. The cubic root of 349569 is about 70.4440479551. Note that the first 3 decimals are identical.

The spelling of 349569 in words is "three hundred forty-nine thousand, five hundred sixty-nine".