349809079 has 4 divisors (see below), whose sum is σ = 350190640. Its totient is φ = 349427520.

The previous prime is 349809059. The next prime is 349809091. The reversal of 349809079 is 970908943.

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 349809079 - 2⁷ = 349808951 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 (349809059) 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, 189402 + ... + 191239.

It is an arithmetic number, because the mean of its divisors is an integer number (87547660).

Almost surely, 2^349809079 is an apocalyptic number.

349809079 is a deficient number, since it is larger than the sum of its proper divisors (381561).

349809079 is an equidigital number, since it uses as much as digits as its factorization.

349809079 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 381560.

The product of its (nonzero) digits is 489888, while the sum is 49.

The square root of 349809079 is about 18703.1836594736. The cubic root of 349809079 is about 704.6017092024.

The spelling of 349809079 in words is "three hundred forty-nine million, eight hundred nine thousand, seventy-nine".