349778885 has 16 divisors (see below), whose sum is σ = 443055360. Its totient is φ = 264358080.

The previous prime is 349778867. The next prime is 349778903. The reversal of 349778885 is 588877943.

It is an interprime number because it is at equal distance from previous prime (349778867) and next prime (349778903).

It is not a de Polignac number, because 349778885 - 2⁸ = 349778629 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30500 + ... + 40370.

It is an arithmetic number, because the mean of its divisors is an integer number (27690960).

Almost surely, 2^349778885 is an apocalyptic number.

It is an amenable number.

349778885 is a deficient number, since it is larger than the sum of its proper divisors (93276475).

349778885 is a wasteful number, since it uses less digits than its factorization.

349778885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10268.

The product of its digits is 13547520, while the sum is 59.

The square root of 349778885 is about 18702.3764532746. The cubic root of 349778885 is about 704.5814358996.

The spelling of 349778885 in words is "three hundred forty-nine million, seven hundred seventy-eight thousand, eight hundred eighty-five".