349749133 has 2 divisors, whose sum is σ = 349749134. Its totient is φ = 349749132.

The previous prime is 349749121. The next prime is 349749149. The reversal of 349749133 is 331947943.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 228705129 + 121044004 = 15123^2 + 11002^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-349749133 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 349749133.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (349749233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 174874566 + 174874567.

It is an arithmetic number, because the mean of its divisors is an integer number (174874567).

Almost surely, 2^349749133 is an apocalyptic number.

It is an amenable number.

349749133 is a deficient number, since it is larger than the sum of its proper divisors (1).

349749133 is an equidigital number, since it uses as much as digits as its factorization.

349749133 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 244944, while the sum is 43.

The square root of 349749133 is about 18701.5810294210. The cubic root of 349749133 is about 704.5614582297.

The spelling of 349749133 in words is "three hundred forty-nine million, seven hundred forty-nine thousand, one hundred thirty-three".