855949559 has 8 divisors (see below), whose sum is σ = 865994160. Its totient is φ = 845960256.

The previous prime is 855949513. The next prime is 855949561. The reversal of 855949559 is 955949558.

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

It is a cyclic number.

It is not a de Polignac number, because 855949559 - 2²⁰ = 854900983 is a prime.

It is a super-3 number, since 3×855949559³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 855949498 and 855949507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (855949459) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17732 + ... + 45014.

It is an arithmetic number, because the mean of its divisors is an integer number (108249270).

Almost surely, 2^855949559 is an apocalyptic number.

855949559 is a deficient number, since it is larger than the sum of its proper divisors (10044601).

855949559 is a wasteful number, since it uses less digits than its factorization.

855949559 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27649.

The product of its digits is 14580000, while the sum is 59.

The square root of 855949559 is about 29256.6156450127. The cubic root of 855949559 is about 949.4732292916.

Subtracting 855949559 from its reverse (955949558), we obtain a palindrome (99999999).

The spelling of 855949559 in words is "eight hundred fifty-five million, nine hundred forty-nine thousand, five hundred fifty-nine".