348445397 has 2 divisors, whose sum is σ = 348445398. Its totient is φ = 348445396.

The previous prime is 348445381. The next prime is 348445403. The reversal of 348445397 is 793544843.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 283787716 + 64657681 = 16846^2 + 8041^2 .

It is a cyclic number.

It is not a de Polignac number, because 348445397 - 2⁴ = 348445381 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (348445337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 174222698 + 174222699.

It is an arithmetic number, because the mean of its divisors is an integer number (174222699).

Almost surely, 2^348445397 is an apocalyptic number.

It is an amenable number.

348445397 is a deficient number, since it is larger than the sum of its proper divisors (1).

348445397 is an equidigital number, since it uses as much as digits as its factorization.

348445397 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1451520, while the sum is 47.

The square root of 348445397 is about 18666.6921815302. The cubic root of 348445397 is about 703.6849196159.

The spelling of 348445397 in words is "three hundred forty-eight million, four hundred forty-five thousand, three hundred ninety-seven".