855836953 has 4 divisors (see below), whose sum is σ = 856219408. Its totient is φ = 855454500.

The previous prime is 855836929. The next prime is 855836957. The reversal of 855836953 is 359638558.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 855836953 - 2⁵ = 855836921 is a prime.

It is a super-3 number, since 3×855836953³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 855836953.

It is not an unprimeable number, because it can be changed into a prime (855836957) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 187851 + ... + 192352.

It is an arithmetic number, because the mean of its divisors is an integer number (214054852).

Almost surely, 2^855836953 is an apocalyptic number.

It is an amenable number.

855836953 is a deficient number, since it is larger than the sum of its proper divisors (382455).

855836953 is a wasteful number, since it uses less digits than its factorization.

855836953 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 382454.

The product of its digits is 3888000, while the sum is 52.

The square root of 855836953 is about 29254.6911280909. The cubic root of 855836953 is about 949.4315909068.

The spelling of 855836953 in words is "eight hundred fifty-five million, eight hundred thirty-six thousand, nine hundred fifty-three".