349655381 has 2 divisors, whose sum is σ = 349655382. Its totient is φ = 349655380.

The previous prime is 349655377. The next prime is 349655389. The reversal of 349655381 is 183556943.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 337052881 + 12602500 = 18359^2 + 3550^2 .

It is a cyclic number.

It is not a de Polignac number, because 349655381 - 2² = 349655377 is a prime.

It is a super-2 number, since 2×349655381² = 244517770924510322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (349655389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 174827690 + 174827691.

It is an arithmetic number, because the mean of its divisors is an integer number (174827691).

Almost surely, 2^349655381 is an apocalyptic number.

It is an amenable number.

349655381 is a deficient number, since it is larger than the sum of its proper divisors (1).

349655381 is an equidigital number, since it uses as much as digits as its factorization.

349655381 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 388800, while the sum is 44.

The square root of 349655381 is about 18699.0743353782. The cubic root of 349655381 is about 704.4984988659.

The spelling of 349655381 in words is "three hundred forty-nine million, six hundred fifty-five thousand, three hundred eighty-one".