349526143 has 4 divisors (see below), whose sum is σ = 349710768. Its totient is φ = 349341520.

The previous prime is 349526131. The next prime is 349526159. The reversal of 349526143 is 341625943.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-349526143 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (349526123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 89443 + ... + 93268.

It is an arithmetic number, because the mean of its divisors is an integer number (87427692).

Almost surely, 2^349526143 is an apocalyptic number.

349526143 is a deficient number, since it is larger than the sum of its proper divisors (184625).

349526143 is a wasteful number, since it uses less digits than its factorization.

349526143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184624.

The product of its digits is 77760, while the sum is 37.

The square root of 349526143 is about 18695.6182834374. The cubic root of 349526143 is about 704.4116903474.

The spelling of 349526143 in words is "three hundred forty-nine million, five hundred twenty-six thousand, one hundred forty-three".