349723779 has 8 divisors (see below), whose sum is σ = 493727760. Its totient is φ = 219434496.

The previous prime is 349723753. The next prime is 349723783. The reversal of 349723779 is 977327943.

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

It is not a de Polignac number, because 349723779 - 2⁸ = 349723523 is a prime.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (51), and also a Moran number because the ratio is a prime number: 6857329 = 349723779 / (3 + 4 + 9 + 7 + 2 + 3 + 7 + 7 + 9).

It is not an unprimeable number, because it can be changed into a prime (349723079) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3428614 + ... + 3428715.

It is an arithmetic number, because the mean of its divisors is an integer number (61715970).

Almost surely, 2^349723779 is an apocalyptic number.

349723779 is a deficient number, since it is larger than the sum of its proper divisors (144003981).

349723779 is a wasteful number, since it uses less digits than its factorization.

349723779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6857349.

The product of its digits is 2000376, while the sum is 51.

The square root of 349723779 is about 18700.9031600081. The cubic root of 349723779 is about 704.5444328047.

The spelling of 349723779 in words is "three hundred forty-nine million, seven hundred twenty-three thousand, seven hundred seventy-nine".