349388543 has 4 divisors (see below), whose sum is σ = 399301200. Its totient is φ = 299475888.

The previous prime is 349388531. The next prime is 349388563. The reversal of 349388543 is 345883943.

It is a happy number.

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 349388543 - 2¹² = 349384447 is a prime.

It is a super-3 number, since 3×349388543³ (a number of 27 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (349388503) 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, 24956318 + ... + 24956331.

It is an arithmetic number, because the mean of its divisors is an integer number (99825300).

Almost surely, 2^349388543 is an apocalyptic number.

349388543 is a deficient number, since it is larger than the sum of its proper divisors (49912657).

349388543 is an equidigital number, since it uses as much as digits as its factorization.

349388543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49912656.

The product of its digits is 1244160, while the sum is 47.

The square root of 349388543 is about 18691.9379145128. The cubic root of 349388543 is about 704.3192415920.

The spelling of 349388543 in words is "three hundred forty-nine million, three hundred eighty-eight thousand, five hundred forty-three".