349561 has 4 divisors (see below), whose sum is σ = 353124. Its totient is φ = 346000.

The previous prime is 349553. The next prime is 349567. The reversal of 349561 is 165943.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 219961 + 129600 = 469^2 + 360^2 .

It is a cyclic number.

It is not a de Polignac number, because 349561 - 2³ = 349553 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

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

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1630 + ... + 1831.

It is an arithmetic number, because the mean of its divisors is an integer number (88281).

2³⁴⁹⁵⁶¹ is an apocalyptic number.

It is an amenable number.

349561 is a deficient number, since it is larger than the sum of its proper divisors (3563).

349561 is a wasteful number, since it uses less digits than its factorization.

349561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3562.

The product of its digits is 3240, while the sum is 28.

The square root of 349561 is about 591.2368391770. The cubic root of 349561 is about 70.4435105727.

The spelling of 349561 in words is "three hundred forty-nine thousand, five hundred sixty-one".