858794454 has 64 divisors (see below), whose sum is σ = 2187271680. Its totient is φ = 244671840.

The previous prime is 858794441. The next prime is 858794459. The reversal of 858794454 is 454497858.

It is a happy number.

858794454 is a `hidden beast` number, since 8 + 587 + 9 + 4 + 4 + 54 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 858794454.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (858794459) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 137949 + ... + 144039.

It is an arithmetic number, because the mean of its divisors is an integer number (34176120).

Almost surely, 2^858794454 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 858794454, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1093635840).

858794454 is an abundant number, since it is smaller than the sum of its proper divisors (1328477226).

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

858794454 is a wasteful number, since it uses less digits than its factorization.

858794454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6482 (or 6476 counting only the distinct ones).

The product of its digits is 6451200, while the sum is 54.

The square root of 858794454 is about 29305.1950002043. The cubic root of 858794454 is about 950.5239783487.

It can be divided in two parts, 8587 and 94454, that added together give a square (103041 = 321²).

The spelling of 858794454 in words is "eight hundred fifty-eight million, seven hundred ninety-four thousand, four hundred fifty-four".