855190494 has 64 divisors (see below), whose sum is σ = 2007590400. Its totient is φ = 269096256.

The previous prime is 855190489. The next prime is 855190519. The reversal of 855190494 is 494091558.

855190494 is a `hidden beast` number, since 8 + 551 + 9 + 0 + 4 + 94 = 666.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 319807 + ... + 322469.

It is an arithmetic number, because the mean of its divisors is an integer number (31368600).

Almost surely, 2^855190494 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 855190494, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1003795200).

855190494 is an abundant number, since it is smaller than the sum of its proper divisors (1152399906).

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

855190494 is a wasteful number, since it uses less digits than its factorization.

855190494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3006 (or 3000 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 45.

The square root of 855190494 is about 29243.6402316811. The cubic root of 855190494 is about 949.1924786956.

The spelling of 855190494 in words is "eight hundred fifty-five million, one hundred ninety thousand, four hundred ninety-four".