349857289 has 8 divisors (see below), whose sum is σ = 361912320. Its totient is φ = 337850400.

The previous prime is 349857281. The next prime is 349857307. The reversal of 349857289 is 982758943.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 349857289 - 2³ = 349857281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (349857281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3069 + ... + 26629.

It is an arithmetic number, because the mean of its divisors is an integer number (45239040).

Almost surely, 2^349857289 is an apocalyptic number.

It is an amenable number.

349857289 is a deficient number, since it is larger than the sum of its proper divisors (12055031).

349857289 is a wasteful number, since it uses less digits than its factorization.

349857289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24071.

The product of its digits is 4354560, while the sum is 55.

The square root of 349857289 is about 18704.4724330840. The cubic root of 349857289 is about 704.6340766566.

The spelling of 349857289 in words is "three hundred forty-nine million, eight hundred fifty-seven thousand, two hundred eighty-nine".