822947622 has 16 divisors (see below), whose sum is σ = 1881023232. Its totient is φ = 235127880.

The previous prime is 822947591. The next prime is 822947623. The reversal of 822947622 is 226749228.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42), and also a Moran number because the ratio is a prime number: 19593991 = 822947622 / (8 + 2 + 2 + 9 + 4 + 7 + 6 + 2 + 2).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (822947623) 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, 9796954 + ... + 9797037.

It is an arithmetic number, because the mean of its divisors is an integer number (117563952).

Almost surely, 2^822947622 is an apocalyptic number.

822947622 is an abundant number, since it is smaller than the sum of its proper divisors (1058075610).

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

822947622 is a wasteful number, since it uses less digits than its factorization.

822947622 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19594003.

The product of its digits is 193536, while the sum is 42.

The square root of 822947622 is about 28687.0636698844. The cubic root of 822947622 is about 937.1103435971.

The spelling of 822947622 in words is "eight hundred twenty-two million, nine hundred forty-seven thousand, six hundred twenty-two".