855903772 has 12 divisors (see below), whose sum is σ = 1502359096. Its totient is φ = 426658320.

The previous prime is 855903703. The next prime is 855903779. The reversal of 855903772 is 277309558.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (855903779) 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 3 ways as a sum of consecutive naturals, for example, 321903 + ... + 324550.

Almost surely, 2^855903772 is an apocalyptic number.

It is an amenable number.

855903772 is a deficient number, since it is larger than the sum of its proper divisors (646455324).

855903772 is a wasteful number, since it uses less digits than its factorization.

855903772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 646788 (or 646786 counting only the distinct ones).

The product of its (nonzero) digits is 529200, while the sum is 46.

The square root of 855903772 is about 29255.8331277713. The cubic root of 855903772 is about 949.4562990471.

The spelling of 855903772 in words is "eight hundred fifty-five million, nine hundred three thousand, seven hundred seventy-two".