816396244 has 6 divisors (see below), whose sum is σ = 1428693434. Its totient is φ = 408198120.

The previous prime is 816396241. The next prime is 816396257. The reversal of 816396244 is 442693618.

It is a happy number.

816396244 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 815787844 + 608400 = 28562^2 + 780^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 816396244.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (816396241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102049527 + ... + 102049534.

Almost surely, 2^816396244 is an apocalyptic number.

It is an amenable number.

816396244 is a deficient number, since it is larger than the sum of its proper divisors (612297190).

816396244 is a wasteful number, since it uses less digits than its factorization.

816396244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204099065 (or 204099063 counting only the distinct ones).

The product of its digits is 248832, while the sum is 43.

The square root of 816396244 is about 28572.6485296691. The cubic root of 816396244 is about 934.6169779123.

The spelling of 816396244 in words is "eight hundred sixteen million, three hundred ninety-six thousand, two hundred forty-four".