349167817 has 4 divisors (see below), whose sum is σ = 349290436. Its totient is φ = 349045200.

The previous prime is 349167757. The next prime is 349167821. The reversal of 349167817 is 718761943.

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 346108816 + 3059001 = 18604^2 + 1749^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-349167817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (349167877) 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, 56934 + ... + 62767.

It is an arithmetic number, because the mean of its divisors is an integer number (87322609).

Almost surely, 2^349167817 is an apocalyptic number.

It is an amenable number.

349167817 is a deficient number, since it is larger than the sum of its proper divisors (122619).

349167817 is a wasteful number, since it uses less digits than its factorization.

349167817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122618.

The product of its digits is 254016, while the sum is 46.

The square root of 349167817 is about 18686.0326714902. The cubic root of 349167817 is about 704.1708925967.

The spelling of 349167817 in words is "three hundred forty-nine million, one hundred sixty-seven thousand, eight hundred seventeen".