349121679 has 4 divisors (see below), whose sum is σ = 465495576. Its totient is φ = 232747784.

The previous prime is 349121651. The next prime is 349121699. The reversal of 349121679 is 976121943.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 349121679 - 2¹³ = 349113487 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 349121679.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (349121699) 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, 58186944 + ... + 58186949.

It is an arithmetic number, because the mean of its divisors is an integer number (116373894).

Almost surely, 2^349121679 is an apocalyptic number.

349121679 is a deficient number, since it is larger than the sum of its proper divisors (116373897).

349121679 is a wasteful number, since it uses less digits than its factorization.

349121679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116373896.

The product of its digits is 81648, while the sum is 42.

The square root of 349121679 is about 18684.7980722297. The cubic root of 349121679 is about 704.1398755459.

The spelling of 349121679 in words is "three hundred forty-nine million, one hundred twenty-one thousand, six hundred seventy-nine".