349688879 has 8 divisors (see below), whose sum is σ = 356971440. Its totient is φ = 342467136.

The previous prime is 349688869. The next prime is 349688891. The reversal of 349688879 is 978886943.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-349688879 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 (349688809) 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 7 ways as a sum of consecutive naturals, for example, 3494 + ... + 26675.

It is an arithmetic number, because the mean of its divisors is an integer number (44621430).

Almost surely, 2^349688879 is an apocalyptic number.

349688879 is a deficient number, since it is larger than the sum of its proper divisors (7282561).

349688879 is a wasteful number, since it uses less digits than its factorization.

349688879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30409.

The product of its digits is 20901888, while the sum is 62.

The square root of 349688879 is about 18699.9700267139. The cubic root of 349688879 is about 704.5209958142.

The spelling of 349688879 in words is "three hundred forty-nine million, six hundred eighty-eight thousand, eight hundred seventy-nine".