349786 has 4 divisors (see below), whose sum is σ = 524682. Its totient is φ = 174892.

The previous prime is 349759. The next prime is 349787. The reversal of 349786 is 687943.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 687943 = 199 ⋅3457.

It can be written as a sum of positive squares in only one way, i.e., 185761 + 164025 = 431^2 + 405^2 .

It is not an unprimeable number, because it can be changed into a prime (349787) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 87445 + ... + 87448.

2³⁴⁹⁷⁸⁶ is an apocalyptic number.

349786 is a deficient number, since it is larger than the sum of its proper divisors (174896).

349786 is a wasteful number, since it uses less digits than its factorization.

349786 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174895.

The product of its digits is 36288, while the sum is 37.

The square root of 349786 is about 591.4270876448. The cubic root of 349786 is about 70.4586213263.

The spelling of 349786 in words is "three hundred forty-nine thousand, seven hundred eighty-six".