349813 has 2 divisors, whose sum is σ = 349814. Its totient is φ = 349812.

The previous prime is 349801. The next prime is 349819. The reversal of 349813 is 318943.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 195364 + 154449 = 442^2 + 393^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-349813 is a prime.

349813 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (349819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 174906 + 174907.

It is an arithmetic number, because the mean of its divisors is an integer number (174907).

2³⁴⁹⁸¹³ is an apocalyptic number.

It is an amenable number.

349813 is a deficient number, since it is larger than the sum of its proper divisors (1).

349813 is an equidigital number, since it uses as much as digits as its factorization.

349813 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2592, while the sum is 28.

The square root of 349813 is about 591.4499133485. The cubic root of 349813 is about 70.4604341813.

The spelling of 349813 in words is "three hundred forty-nine thousand, eight hundred thirteen".