349206169 has 4 divisors (see below), whose sum is σ = 376068196. Its totient is φ = 322344144.

The previous prime is 349206167. The next prime is 349206223. The reversal of 349206169 is 961602943.

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

It can be written as a sum of positive squares in 2 ways, for example, as 209091600 + 140114569 = 14460^2 + 11837^2 .

It is a cyclic number.

It is not a de Polignac number, because 349206169 - 2¹ = 349206167 is a prime.

It is a super-2 number, since 2×349206169² = 243889896935313122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (349206161) 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, 13430994 + ... + 13431019.

It is an arithmetic number, because the mean of its divisors is an integer number (94017049).

Almost surely, 2^349206169 is an apocalyptic number.

It is an amenable number.

349206169 is a deficient number, since it is larger than the sum of its proper divisors (26862027).

349206169 is a wasteful number, since it uses less digits than its factorization.

349206169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26862026.

The product of its (nonzero) digits is 69984, while the sum is 40.

The square root of 349206169 is about 18687.0588643585. The cubic root of 349206169 is about 704.1966732978.

The spelling of 349206169 in words is "three hundred forty-nine million, two hundred six thousand, one hundred sixty-nine".