349821379 has 4 divisors (see below), whose sum is σ = 349900200. Its totient is φ = 349742560.

The previous prime is 349821377. The next prime is 349821419. The reversal of 349821379 is 973128943.

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 349821379 - 2¹ = 349821377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (349821377) 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, 32329 + ... + 41770.

It is an arithmetic number, because the mean of its divisors is an integer number (87475050).

Almost surely, 2^349821379 is an apocalyptic number.

349821379 is a deficient number, since it is larger than the sum of its proper divisors (78821).

349821379 is an equidigital number, since it uses as much as digits as its factorization.

349821379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78820.

The product of its digits is 326592, while the sum is 46.

The square root of 349821379 is about 18703.5124776070. The cubic root of 349821379 is about 704.6099675162.

The spelling of 349821379 in words is "three hundred forty-nine million, eight hundred twenty-one thousand, three hundred seventy-nine".