349850069 has 2 divisors, whose sum is σ = 349850070. Its totient is φ = 349850068.

The previous prime is 349850057. The next prime is 349850077. The reversal of 349850069 is 960058943.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 255040900 + 94809169 = 15970^2 + 9737^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-349850069 is a prime.

It is a super-2 number, since 2×349850069² = 244790141558609522, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (349850009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 174925034 + 174925035.

It is an arithmetic number, because the mean of its divisors is an integer number (174925035).

Almost surely, 2^349850069 is an apocalyptic number.

It is an amenable number.

349850069 is a deficient number, since it is larger than the sum of its proper divisors (1).

349850069 is an equidigital number, since it uses as much as digits as its factorization.

349850069 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 233280, while the sum is 44.

The square root of 349850069 is about 18704.2794301197. The cubic root of 349850069 is about 704.6292294487.

The spelling of 349850069 in words is "three hundred forty-nine million, eight hundred fifty thousand, sixty-nine".