855299394 has 12 divisors (see below), whose sum is σ = 1853148726. Its totient is φ = 285099792.

The previous prime is 855299353. The next prime is 855299399. The reversal of 855299394 is 493992558.

It is a happy number.

855299394 is a `hidden beast` number, since 85 + 529 + 9 + 39 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 676676169 + 178623225 = 26013^2 + 13365^2 .

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 855299394.

It is not an unprimeable number, because it can be changed into a prime (855299399) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 23758299 + ... + 23758334.

Almost surely, 2^855299394 is an apocalyptic number.

855299394 is an abundant number, since it is smaller than the sum of its proper divisors (997849332).

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

855299394 is a wasteful number, since it uses less digits than its factorization.

855299394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47516641 (or 47516638 counting only the distinct ones).

The product of its digits is 3499200, while the sum is 54.

The square root of 855299394 is about 29245.5021157100. The cubic root of 855299394 is about 949.2327670580.

The spelling of 855299394 in words is "eight hundred fifty-five million, two hundred ninety-nine thousand, three hundred ninety-four".