349561771 has 8 divisors (see below), whose sum is σ = 379784160. Its totient is φ = 319815552.

The previous prime is 349561763. The next prime is 349561811. The reversal of 349561771 is 177165943.

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

It is a cyclic number.

It is not a de Polignac number, because 349561771 - 2³ = 349561763 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (349561711) 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 7 ways as a sum of consecutive naturals, for example, 117511 + ... + 120448.

It is an arithmetic number, because the mean of its divisors is an integer number (47473020).

Almost surely, 2^349561771 is an apocalyptic number.

349561771 is a deficient number, since it is larger than the sum of its proper divisors (30222389).

349561771 is a wasteful number, since it uses less digits than its factorization.

349561771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238085.

The product of its digits is 158760, while the sum is 43.

The square root of 349561771 is about 18696.5711027450. The cubic root of 349561771 is about 704.4356236330.

The spelling of 349561771 in words is "three hundred forty-nine million, five hundred sixty-one thousand, seven hundred seventy-one".