855949558 has 16 divisors (see below), whose sum is σ = 1406328480. Its totient is φ = 388909696.

The previous prime is 855949513. The next prime is 855949561.

855949558 is nontrivially palindromic in base 10.

It is a super-3 number, since 3×855949558³ (a number of 28 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (58).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 433066 + ... + 435037.

It is an arithmetic number, because the mean of its divisors is an integer number (87895530).

Almost surely, 2^855949558 is an apocalyptic number.

855949558 is a deficient number, since it is larger than the sum of its proper divisors (550378922).

855949558 is a wasteful number, since it uses less digits than its factorization.

855949558 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 868151.

The product of its digits is 12960000, while the sum is 58.

The square root of 855949558 is about 29256.6156279225. The cubic root of 855949558 is about 949.4732289219.

The spelling of 855949558 in words is "eight hundred fifty-five million, nine hundred forty-nine thousand, five hundred fifty-eight".