855945492 has 12 divisors (see below), whose sum is σ = 1997206176. Its totient is φ = 285315160.

The previous prime is 855945451. The next prime is 855945523. The reversal of 855945492 is 294549558.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

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, 35664384 + ... + 35664407.

It is an arithmetic number, because the mean of its divisors is an integer number (166433848).

Almost surely, 2^855945492 is an apocalyptic number.

It is an amenable number.

855945492 is an abundant number, since it is smaller than the sum of its proper divisors (1141260684).

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

855945492 is a wasteful number, since it uses less digits than its factorization.

855945492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71328798 (or 71328796 counting only the distinct ones).

The product of its digits is 2592000, while the sum is 51.

The square root of 855945492 is about 29256.5461392831. The cubic root of 855945492 is about 949.4717254983.

The spelling of 855945492 in words is "eight hundred fifty-five million, nine hundred forty-five thousand, four hundred ninety-two".