822857479 has 2 divisors, whose sum is σ = 822857480. Its totient is φ = 822857478.

The previous prime is 822857461. The next prime is 822857507. The reversal of 822857479 is 974758228.

It is a happy number.

822857479 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 822857479 - 2¹¹ = 822855431 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (822857419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 411428739 + 411428740.

It is an arithmetic number, because the mean of its divisors is an integer number (411428740).

Almost surely, 2^822857479 is an apocalyptic number.

822857479 is a deficient number, since it is larger than the sum of its proper divisors (1).

822857479 is an equidigital number, since it uses as much as digits as its factorization.

822857479 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2257920, while the sum is 52.

The square root of 822857479 is about 28685.4924831351. The cubic root of 822857479 is about 937.0761263436.

The spelling of 822857479 in words is "eight hundred twenty-two million, eight hundred fifty-seven thousand, four hundred seventy-nine".