349806143 has 2 divisors, whose sum is σ = 349806144. Its totient is φ = 349806142.

The previous prime is 349806109. The next prime is 349806151. The reversal of 349806143 is 341608943.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 349806143 - 2¹⁰ = 349805119 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 349806097 and 349806106.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (349806343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 174903071 + 174903072.

It is an arithmetic number, because the mean of its divisors is an integer number (174903072).

Almost surely, 2^349806143 is an apocalyptic number.

349806143 is a deficient number, since it is larger than the sum of its proper divisors (1).

349806143 is an equidigital number, since it uses as much as digits as its factorization.

349806143 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 62208, while the sum is 38.

The square root of 349806143 is about 18703.1051699978. The cubic root of 349806143 is about 704.5997379210.

The spelling of 349806143 in words is "three hundred forty-nine million, eight hundred six thousand, one hundred forty-three".