349858417 has 2 divisors, whose sum is σ = 349858418. Its totient is φ = 349858416.

The previous prime is 349858403. The next prime is 349858423. The reversal of 349858417 is 714858943.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 347412321 + 2446096 = 18639^2 + 1564^2 .

It is a cyclic number.

It is not a de Polignac number, because 349858417 - 2¹⁵ = 349825649 is a prime.

It is not a weakly prime, because it can be changed into another prime (349858427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 174929208 + 174929209.

It is an arithmetic number, because the mean of its divisors is an integer number (174929209).

Almost surely, 2^349858417 is an apocalyptic number.

It is an amenable number.

349858417 is a deficient number, since it is larger than the sum of its proper divisors (1).

349858417 is an equidigital number, since it uses as much as digits as its factorization.

349858417 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 967680, while the sum is 49.

The square root of 349858417 is about 18704.5025862759. The cubic root of 349858417 is about 704.6348339429.

The spelling of 349858417 in words is "three hundred forty-nine million, eight hundred fifty-eight thousand, four hundred seventeen".