816289446 has 32 divisors (see below), whose sum is σ = 1882932480. Its totient is φ = 231084576.

The previous prime is 816289423. The next prime is 816289471. The reversal of 816289446 is 644982618.

816289446 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 816289395 and 816289404.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 84576 + ... + 93731.

It is an arithmetic number, because the mean of its divisors is an integer number (58841640).

Almost surely, 2^816289446 is an apocalyptic number.

816289446 is an abundant number, since it is smaller than the sum of its proper divisors (1066643034).

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

816289446 is a wasteful number, since it uses less digits than its factorization.

816289446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178428.

The product of its digits is 663552, while the sum is 48.

The square root of 816289446 is about 28570.7795833435. The cubic root of 816289446 is about 934.5762217323.

The spelling of 816289446 in words is "eight hundred sixteen million, two hundred eighty-nine thousand, four hundred forty-six".