822906489 has 16 divisors (see below), whose sum is σ = 1156258944. Its totient is φ = 519552000.

The previous prime is 822906479. The next prime is 822906493. The reversal of 822906489 is 984609228.

It is not a de Polignac number, because 822906489 - 2⁹ = 822905977 is a prime.

It is not an unprimeable number, because it can be changed into a prime (822906419) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52072 + ... + 66009.

It is an arithmetic number, because the mean of its divisors is an integer number (72266184).

Almost surely, 2^822906489 is an apocalyptic number.

It is an amenable number.

822906489 is a deficient number, since it is larger than the sum of its proper divisors (333352455).

822906489 is a wasteful number, since it uses less digits than its factorization.

822906489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118208.

The product of its (nonzero) digits is 497664, while the sum is 48.

The square root of 822906489 is about 28686.3467349888. The cubic root of 822906489 is about 937.0947302899.

The spelling of 822906489 in words is "eight hundred twenty-two million, nine hundred six thousand, four hundred eighty-nine".