349551866 has 8 divisors (see below), whose sum is σ = 524475444. Its totient is φ = 174726720.

The previous prime is 349551857. The next prime is 349551869. The reversal of 349551866 is 668155943.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 349503025 + 48841 = 18695^2 + 221^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 349551866.

It is not an unprimeable number, because it can be changed into a prime (349551869) 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, 14975 + ... + 30386.

Almost surely, 2^349551866 is an apocalyptic number.

349551866 is a deficient number, since it is larger than the sum of its proper divisors (174923578).

349551866 is a wasteful number, since it uses less digits than its factorization.

349551866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49216.

The product of its digits is 777600, while the sum is 47.

The square root of 349551866 is about 18696.3062127256. The cubic root of 349551866 is about 704.4289700633.

The spelling of 349551866 in words is "three hundred forty-nine million, five hundred fifty-one thousand, eight hundred sixty-six".