349739 has 4 divisors (see below), whose sum is σ = 376656. Its totient is φ = 322824.

The previous prime is 349729. The next prime is 349753. The reversal of 349739 is 937943.

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

It is a cyclic number.

It is not a de Polignac number, because 349739 - 2⁸ = 349483 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 349699 and 349708.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 349739.

It is not an unprimeable number, because it can be changed into a prime (349709) 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, 13439 + ... + 13464.

It is an arithmetic number, because the mean of its divisors is an integer number (94164).

2³⁴⁹⁷³⁹ is an apocalyptic number.

349739 is a deficient number, since it is larger than the sum of its proper divisors (26917).

349739 is a wasteful number, since it uses less digits than its factorization.

349739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26916.

The product of its digits is 20412, while the sum is 35.

The square root of 349739 is about 591.3873519107. The cubic root of 349739 is about 70.4554653933.

The spelling of 349739 in words is "three hundred forty-nine thousand, seven hundred thirty-nine".