349389 has 6 divisors (see below), whose sum is σ = 504686. Its totient is φ = 232920.

The previous prime is 349387. The next prime is 349397. The reversal of 349389 is 983943.

It can be written as a sum of positive squares in only one way, i.e., 311364 + 38025 = 558^2 + 195^2 .

It is not a de Polignac number, because 349389 - 2¹ = 349387 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (349381) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 19402 + ... + 19419.

2³⁴⁹³⁸⁹ is an apocalyptic number.

It is an amenable number.

349389 is a deficient number, since it is larger than the sum of its proper divisors (155297).

349389 is a wasteful number, since it uses less digits than its factorization.

349389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38827 (or 38824 counting only the distinct ones).

The product of its digits is 23328, while the sum is 36.

The square root of 349389 is about 591.0913634964. The cubic root of 349389 is about 70.4319548675.

The spelling of 349389 in words is "three hundred forty-nine thousand, three hundred eighty-nine".