349385251 has 2 divisors, whose sum is σ = 349385252. Its totient is φ = 349385250.

The previous prime is 349385237. The next prime is 349385273. The reversal of 349385251 is 152583943.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 349385251 - 2⁵ = 349385219 is a prime.

It is not a weakly prime, because it can be changed into another prime (349385051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 174692625 + 174692626.

It is an arithmetic number, because the mean of its divisors is an integer number (174692626).

Almost surely, 2^349385251 is an apocalyptic number.

349385251 is a deficient number, since it is larger than the sum of its proper divisors (1).

349385251 is an equidigital number, since it uses as much as digits as its factorization.

349385251 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 129600, while the sum is 40.

The square root of 349385251 is about 18691.8498549502. The cubic root of 349385251 is about 704.3170295120.

The spelling of 349385251 in words is "three hundred forty-nine million, three hundred eighty-five thousand, two hundred fifty-one".