349778886 has 8 divisors (see below), whose sum is σ = 699557784. Its totient is φ = 116592960.

The previous prime is 349778867. The next prime is 349778903. The reversal of 349778886 is 688877943.

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

349778886 is an admirable number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29148235 + ... + 29148246.

It is an arithmetic number, because the mean of its divisors is an integer number (87444723).

Almost surely, 2^349778886 is an apocalyptic number.

349778886 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

349778886 is a wasteful number, since it uses less digits than its factorization.

349778886 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58296486.

The product of its digits is 16257024, while the sum is 60.

The square root of 349778886 is about 18702.3764800092. The cubic root of 349778886 is about 704.5814365710.

The spelling of 349778886 in words is "three hundred forty-nine million, seven hundred seventy-eight thousand, eight hundred eighty-six".