855644458 has 8 divisors (see below), whose sum is σ = 1284034752. Its totient is φ = 427632876.

The previous prime is 855644431. The next prime is 855644467. The reversal of 855644458 is 854446558.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×855644458² = 1464254877012227528, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 88960 + ... + 98107.

It is an arithmetic number, because the mean of its divisors is an integer number (160504344).

Almost surely, 2^855644458 is an apocalyptic number.

855644458 is a deficient number, since it is larger than the sum of its proper divisors (428390294).

855644458 is a wasteful number, since it uses less digits than its factorization.

855644458 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189356.

The product of its digits is 3072000, while the sum is 49.

The square root of 855644458 is about 29251.4009579029. The cubic root of 855644458 is about 949.3604034619.

The spelling of 855644458 in words is "eight hundred fifty-five million, six hundred forty-four thousand, four hundred fifty-eight".