349872797 has 2 divisors, whose sum is σ = 349872798. Its totient is φ = 349872796.

The previous prime is 349872793. The next prime is 349872799. The reversal of 349872797 is 797278943.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 344882041 + 4990756 = 18571^2 + 2234^2 .

It is a cyclic number.

It is not a de Polignac number, because 349872797 - 2² = 349872793 is a prime.

Together with 349872799, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (349872793) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 174936398 + 174936399.

It is an arithmetic number, because the mean of its divisors is an integer number (174936399).

Almost surely, 2^349872797 is an apocalyptic number.

It is an amenable number.

349872797 is a deficient number, since it is larger than the sum of its proper divisors (1).

349872797 is an equidigital number, since it uses as much as digits as its factorization.

349872797 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5334336, while the sum is 56.

The square root of 349872797 is about 18704.8869817489. The cubic root of 349872797 is about 704.6444878577.

The spelling of 349872797 in words is "three hundred forty-nine million, eight hundred seventy-two thousand, seven hundred ninety-seven".