349889 has 4 divisors (see below), whose sum is σ = 354756. Its totient is φ = 345024.

The previous prime is 349871. The next prime is 349903. The reversal of 349889 is 988943.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 988943 = 157 ⋅6299.

It can be written as a sum of positive squares in 2 ways, for example, as 255025 + 94864 = 505^2 + 308^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-349889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (349819) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2324 + ... + 2469.

It is an arithmetic number, because the mean of its divisors is an integer number (88689).

2³⁴⁹⁸⁸⁹ is an apocalyptic number.

It is an amenable number.

349889 is a deficient number, since it is larger than the sum of its proper divisors (4867).

349889 is an equidigital number, since it uses as much as digits as its factorization.

349889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4866.

The product of its digits is 62208, while the sum is 41.

The square root of 349889 is about 591.5141587485. The cubic root of 349889 is about 70.4655365314.

The spelling of 349889 in words is "three hundred forty-nine thousand, eight hundred eighty-nine".