349779 has 4 divisors (see below), whose sum is σ = 466376. Its totient is φ = 233184.

The previous prime is 349759. The next prime is 349787. The reversal of 349779 is 977943.

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

It is not a de Polignac number, because 349779 - 2¹¹ = 347731 is a prime.

It is a D-number.

It is a Duffinian number.

349779 is a lucky 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 3 ways as a sum of consecutive naturals, for example, 58294 + ... + 58299.

It is an arithmetic number, because the mean of its divisors is an integer number (116594).

2³⁴⁹⁷⁷⁹ is an apocalyptic number.

349779 is a deficient number, since it is larger than the sum of its proper divisors (116597).

349779 is a wasteful number, since it uses less digits than its factorization.

349779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116596.

The product of its digits is 47628, while the sum is 39.

The square root of 349779 is about 591.4211697259. The cubic root of 349779 is about 70.4581513117.

It can be divided in two parts, 349 and 779, that added together give a triangular number (1128 = T₄₇).

The spelling of 349779 in words is "three hundred forty-nine thousand, seven hundred seventy-nine".