855966349 has 24 divisors (see below), whose sum is σ = 1036506240. Its totient is φ = 703948896.

The previous prime is 855966347. The next prime is 855966373. The reversal of 855966349 is 943669558.

It is not a de Polignac number, because 855966349 - 2¹ = 855966347 is a prime.

It is a Smith number, since the sum of its digits (55) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 855966349.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (855966341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 235504 + ... + 239110.

It is an arithmetic number, because the mean of its divisors is an integer number (43187760).

Almost surely, 2^855966349 is an apocalyptic number.

It is an amenable number.

855966349 is a deficient number, since it is larger than the sum of its proper divisors (180539891).

855966349 is a wasteful number, since it uses less digits than its factorization.

855966349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3817 (or 3810 counting only the distinct ones).

The product of its digits is 6998400, while the sum is 55.

The square root of 855966349 is about 29256.9025872528. The cubic root of 855966349 is about 949.4794374267.

The spelling of 855966349 in words is "eight hundred fifty-five million, nine hundred sixty-six thousand, three hundred forty-nine".