855404458 has 4 divisors (see below), whose sum is σ = 1283106690. Its totient is φ = 427702228.

The previous prime is 855404449. The next prime is 855404489. The reversal of 855404458 is 854404558.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 609447969 + 245956489 = 24687^2 + 15683^2 .

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 as a sum of consecutive naturals, namely, 213851113 + ... + 213851116.

Almost surely, 2^855404458 is an apocalyptic number.

855404458 is a deficient number, since it is larger than the sum of its proper divisors (427702232).

855404458 is a wasteful number, since it uses less digits than its factorization.

855404458 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 427702231.

The product of its (nonzero) digits is 512000, while the sum is 43.

The square root of 855404458 is about 29247.2983025783. The cubic root of 855404458 is about 949.2716330226.

It can be divided in two parts, 85540 and 4458, that added together give a palindrome (89998).

The spelling of 855404458 in words is "eight hundred fifty-five million, four hundred four thousand, four hundred fifty-eight".