349808971 has 2 divisors, whose sum is σ = 349808972. Its totient is φ = 349808970.

The previous prime is 349808969. The next prime is 349808993. The reversal of 349808971 is 179808943.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (179808943) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 349808971 - 2¹ = 349808969 is a prime.

Together with 349808969, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (349808951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 174904485 + 174904486.

It is an arithmetic number, because the mean of its divisors is an integer number (174904486).

Almost surely, 2^349808971 is an apocalyptic number.

349808971 is a deficient number, since it is larger than the sum of its proper divisors (1).

349808971 is an equidigital number, since it uses as much as digits as its factorization.

349808971 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 435456, while the sum is 49.

The square root of 349808971 is about 18703.1807722644. The cubic root of 349808971 is about 704.6016366895.

The spelling of 349808971 in words is "three hundred forty-nine million, eight hundred eight thousand, nine hundred seventy-one".