349929979 has 16 divisors (see below), whose sum is σ = 424900800. Its totient is φ = 281764224.

The previous prime is 349929949. The next prime is 349929991. The reversal of 349929979 is 979929943.

It is not a de Polignac number, because 349929979 - 2⁷ = 349929851 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (349929929) 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 15 ways as a sum of consecutive naturals, for example, 15784 + ... + 30805.

It is an arithmetic number, because the mean of its divisors is an integer number (26556300).

Almost surely, 2^349929979 is an apocalyptic number.

349929979 is a deficient number, since it is larger than the sum of its proper divisors (74970821).

349929979 is a wasteful number, since it uses less digits than its factorization.

349929979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46662.

The product of its digits is 9920232, while the sum is 61.

The square root of 349929979 is about 18706.4154503208. The cubic root of 349929979 is about 704.6828739860.

The spelling of 349929979 in words is "three hundred forty-nine million, nine hundred twenty-nine thousand, nine hundred seventy-nine".