349680489 has 4 divisors (see below), whose sum is σ = 466240656. Its totient is φ = 233120324.

The previous prime is 349680479. The next prime is 349680491. The reversal of 349680489 is 984086943.

It is a happy number.

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 349680489 - 2⁴ = 349680473 is a prime.

It is not an unprimeable number, because it can be changed into a prime (349680479) 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, 58280079 + ... + 58280084.

It is an arithmetic number, because the mean of its divisors is an integer number (116560164).

Almost surely, 2^349680489 is an apocalyptic number.

It is an amenable number.

349680489 is a deficient number, since it is larger than the sum of its proper divisors (116560167).

349680489 is a wasteful number, since it uses less digits than its factorization.

349680489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116560166.

The product of its (nonzero) digits is 1492992, while the sum is 51.

The square root of 349680489 is about 18699.7456934580. The cubic root of 349680489 is about 704.5153613024.

The spelling of 349680489 in words is "three hundred forty-nine million, six hundred eighty thousand, four hundred eighty-nine".