855953599 has 4 divisors (see below), whose sum is σ = 856024480. Its totient is φ = 855882720.

The previous prime is 855953557. The next prime is 855953633. The reversal of 855953599 is 995359558.

855953599 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 995359558 = 2 ⋅497679779.

It is a cyclic number.

It is not a de Polignac number, because 855953599 - 2²⁵ = 822399167 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (855953509) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12282 + ... + 43159.

It is an arithmetic number, because the mean of its divisors is an integer number (214006120).

Almost surely, 2^855953599 is an apocalyptic number.

855953599 is a deficient number, since it is larger than the sum of its proper divisors (70881).

855953599 is a wasteful number, since it uses less digits than its factorization.

855953599 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70880.

The product of its digits is 10935000, while the sum is 58.

The square root of 855953599 is about 29256.6846891441. The cubic root of 855953599 is about 949.4747230969.

The spelling of 855953599 in words is "eight hundred fifty-five million, nine hundred fifty-three thousand, five hundred ninety-nine".