349424561 has 2 divisors, whose sum is σ = 349424562. Its totient is φ = 349424560.

The previous prime is 349424557. The next prime is 349424587. The reversal of 349424561 is 165424943.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 347114161 + 2310400 = 18631^2 + 1520^2 .

It is a cyclic number.

It is not a de Polignac number, because 349424561 - 2² = 349424557 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (349424521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 174712280 + 174712281.

It is an arithmetic number, because the mean of its divisors is an integer number (174712281).

Almost surely, 2^349424561 is an apocalyptic number.

It is an amenable number.

349424561 is a deficient number, since it is larger than the sum of its proper divisors (1).

349424561 is an equidigital number, since it uses as much as digits as its factorization.

349424561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 103680, while the sum is 38.

The square root of 349424561 is about 18692.9013531875. The cubic root of 349424561 is about 704.3434432049.

The spelling of 349424561 in words is "three hundred forty-nine million, four hundred twenty-four thousand, five hundred sixty-one".