349375643 has 4 divisors (see below), whose sum is σ = 349429608. Its totient is φ = 349321680.

The previous prime is 349375627. The next prime is 349375657. The reversal of 349375643 is 346573943.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 349375643 - 2⁴ = 349375627 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 349375594 and 349375603.

It is not an unprimeable number, because it can be changed into a prime (349375693) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15698 + ... + 30743.

It is an arithmetic number, because the mean of its divisors is an integer number (87357402).

Almost surely, 2^349375643 is an apocalyptic number.

349375643 is a deficient number, since it is larger than the sum of its proper divisors (53965).

349375643 is an equidigital number, since it uses as much as digits as its factorization.

349375643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53964.

The product of its digits is 816480, while the sum is 44.

The square root of 349375643 is about 18691.5928427729. The cubic root of 349375643 is about 704.3105732768.

The spelling of 349375643 in words is "three hundred forty-nine million, three hundred seventy-five thousand, six hundred forty-three".