349749 has 6 divisors (see below), whose sum is σ = 505206. Its totient is φ = 233160.

The previous prime is 349729. The next prime is 349753. The reversal of 349749 is 947943.

It can be written as a sum of positive squares in only one way, i.e., 338724 + 11025 = 582^2 + 105^2 .

It is not a de Polignac number, because 349749 - 2⁵ = 349717 is a prime.

It is a congruent number.

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 5 ways as a sum of consecutive naturals, for example, 19422 + ... + 19439.

It is an arithmetic number, because the mean of its divisors is an integer number (84201).

2³⁴⁹⁷⁴⁹ is an apocalyptic number.

It is an amenable number.

349749 is a deficient number, since it is larger than the sum of its proper divisors (155457).

349749 is a wasteful number, since it uses less digits than its factorization.

349749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38867 (or 38864 counting only the distinct ones).

The product of its digits is 27216, while the sum is 36.

The square root of 349749 is about 591.3958065458. The cubic root of 349749 is about 70.4561368921.

The spelling of 349749 in words is "three hundred forty-nine thousand, seven hundred forty-nine".