855398208 has 112 divisors (see below), whose sum is σ = 2598359040. Its totient is φ = 243285504.

The previous prime is 855398207. The next prime is 855398209. The reversal of 855398208 is 802893558.

855398208 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (855398207) and next prime (855398209).

It is a tau number, because it is divible by the number of its divisors (112).

It is a super-2 number, since 2×855398208² = 1463412188499222528, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (855398207) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 319885 + ... + 322547.

Almost surely, 2^855398208 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 855398208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1299179520).

855398208 is an abundant number, since it is smaller than the sum of its proper divisors (1742960832).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

855398208 is a wasteful number, since it uses less digits than its factorization.

855398208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2924 (or 2914 counting only the distinct ones).

The product of its (nonzero) digits is 691200, while the sum is 48.

The square root of 855398208 is about 29247.1914549073. The cubic root of 855398208 is about 949.2693210706.

The spelling of 855398208 in words is "eight hundred fifty-five million, three hundred ninety-eight thousand, two hundred eight".