349686943 has 4 divisors (see below), whose sum is σ = 354113440. Its totient is φ = 345260448.

The previous prime is 349686937. The next prime is 349686973.

349686943 is nontrivially palindromic in base 10.

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 349686943 - 2²⁵ = 316132511 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (349686973) 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, 2213130 + ... + 2213287.

It is an arithmetic number, because the mean of its divisors is an integer number (88528360).

Almost surely, 2^349686943 is an apocalyptic number.

349686943 is a deficient number, since it is larger than the sum of its proper divisors (4426497).

349686943 is an equidigital number, since it uses as much as digits as its factorization.

349686943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4426496.

The product of its digits is 3359232, while the sum is 52.

The square root of 349686943 is about 18699.9182618534. The cubic root of 349686943 is about 704.5196956536.

The spelling of 349686943 in words is "three hundred forty-nine million, six hundred eighty-six thousand, nine hundred forty-three".