349878943 has 2 divisors, whose sum is σ = 349878944. Its totient is φ = 349878942.

The previous prime is 349878937. The next prime is 349879039.

349878943 is nontrivially palindromic in base 10.

It is a weak prime.

It is a palprime.

It is a cyclic number.

It is not a de Polignac number, because 349878943 - 2⁵ = 349878911 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (349878043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 174939471 + 174939472.

It is an arithmetic number, because the mean of its divisors is an integer number (174939472).

Almost surely, 2^349878943 is an apocalyptic number.

349878943 is a deficient number, since it is larger than the sum of its proper divisors (1).

349878943 is an equidigital number, since it uses as much as digits as its factorization.

349878943 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5225472, while the sum is 55.

The square root of 349878943 is about 18705.0512696437. The cubic root of 349878943 is about 704.6486138522.

The spelling of 349878943 in words is "three hundred forty-nine million, eight hundred seventy-eight thousand, nine hundred forty-three".