822680409 has 4 divisors (see below), whose sum is σ = 1096907216. Its totient is φ = 548453604.

The previous prime is 822680407. The next prime is 822680423. The reversal of 822680409 is 904086228.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 822680409 - 2¹ = 822680407 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (822680401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 137113399 + ... + 137113404.

It is an arithmetic number, because the mean of its divisors is an integer number (274226804).

Almost surely, 2^822680409 is an apocalyptic number.

It is an amenable number.

822680409 is a deficient number, since it is larger than the sum of its proper divisors (274226807).

822680409 is a wasteful number, since it uses less digits than its factorization.

822680409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 274226806.

The product of its (nonzero) digits is 55296, while the sum is 39.

The square root of 822680409 is about 28682.4059137305. The cubic root of 822680409 is about 937.0089053171.

The spelling of 822680409 in words is "eight hundred twenty-two million, six hundred eighty thousand, four hundred nine".