855005406 has 16 divisors (see below), whose sum is σ = 1710493200. Its totient is φ = 284921408.

The previous prime is 855005401. The next prime is 855005407. The reversal of 855005406 is 604500558.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (855005401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5440 + ... + 41708.

It is an arithmetic number, because the mean of its divisors is an integer number (106905825).

Almost surely, 2^855005406 is an apocalyptic number.

855005406 is an abundant number, since it is smaller than the sum of its proper divisors (855487794).

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

855005406 is a wasteful number, since it uses less digits than its factorization.

855005406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40203.

The product of its (nonzero) digits is 24000, while the sum is 33.

The square root of 855005406 is about 29240.4754749303. The cubic root of 855005406 is about 949.1239961705.

The spelling of 855005406 in words is "eight hundred fifty-five million, five thousand, four hundred six".