856444446 has 48 divisors (see below), whose sum is σ = 2180046960. Its totient is φ = 239564160.

The previous prime is 856444423. The next prime is 856444447. The reversal of 856444446 is 644444658.

856444446 is a `hidden beast` number, since 8 + 564 + 4 + 44 + 46 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (856444447) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 163791 + ... + 168938.

It is an arithmetic number, because the mean of its divisors is an integer number (45417645).

Almost surely, 2^856444446 is an apocalyptic number.

856444446 is an abundant number, since it is smaller than the sum of its proper divisors (1323602514).

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

856444446 is a wasteful number, since it uses less digits than its factorization.

856444446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 332761 (or 332758 counting only the distinct ones).

The product of its digits is 1474560, while the sum is 45.

The square root of 856444446 is about 29265.0721167743. The cubic root of 856444446 is about 949.6561806601.

The spelling of 856444446 in words is "eight hundred fifty-six million, four hundred forty-four thousand, four hundred forty-six".