349475289 has 4 divisors (see below), whose sum is σ = 465967056. Its totient is φ = 232983524.

The previous prime is 349475281. The next prime is 349475293. The reversal of 349475289 is 982574943.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 349475289 - 2³ = 349475281 is a prime.

It is not an unprimeable number, because it can be changed into a prime (349475281) 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, 58245879 + ... + 58245884.

It is an arithmetic number, because the mean of its divisors is an integer number (116491764).

Almost surely, 2^349475289 is an apocalyptic number.

It is an amenable number.

349475289 is a deficient number, since it is larger than the sum of its proper divisors (116491767).

349475289 is a wasteful number, since it uses less digits than its factorization.

349475289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116491766.

The product of its digits is 2177280, while the sum is 51.

The square root of 349475289 is about 18694.2581826613. The cubic root of 349475289 is about 704.3775261031.

The spelling of 349475289 in words is "three hundred forty-nine million, four hundred seventy-five thousand, two hundred eighty-nine".