349809127 has 2 divisors, whose sum is σ = 349809128. Its totient is φ = 349809126.

The previous prime is 349809091. The next prime is 349809193. The reversal of 349809127 is 721908943.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-349809127 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (349807127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 174904563 + 174904564.

It is an arithmetic number, because the mean of its divisors is an integer number (174904564).

Almost surely, 2^349809127 is an apocalyptic number.

349809127 is a deficient number, since it is larger than the sum of its proper divisors (1).

349809127 is an equidigital number, since it uses as much as digits as its factorization.

349809127 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108864, while the sum is 43.

The square root of 349809127 is about 18703.1849426775. The cubic root of 349809127 is about 704.6017414303.

The spelling of 349809127 in words is "three hundred forty-nine million, eight hundred nine thousand, one hundred twenty-seven".