855473400 has 120 divisors (see below), whose sum is σ = 2971242120. Its totient is φ = 228121920.

The previous prime is 855473387. The next prime is 855473413. The reversal of 855473400 is 4374558.

855473400 is a `hidden beast` number, since 85 + 547 + 34 + 0 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (855473387) and next prime (855473413).

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 10204 + ... + 42603.

It is an arithmetic number, because the mean of its divisors is an integer number (24760351).

Almost surely, 2^855473400 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 855473400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1485621060).

855473400 is an abundant number, since it is smaller than the sum of its proper divisors (2115768720).

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

855473400 is a wasteful number, since it uses less digits than its factorization.

855473400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52835 (or 52817 counting only the distinct ones).

The product of its (nonzero) digits is 67200, while the sum is 36.

The square root of 855473400 is about 29248.4768834208. The cubic root of 855473400 is about 949.2971347707.

The spelling of 855473400 in words is "eight hundred fifty-five million, four hundred seventy-three thousand, four hundred".