822949 has 2 divisors, whose sum is σ = 822950. Its totient is φ = 822948.

The previous prime is 822907. The next prime is 822971. The reversal of 822949 is 949228.

822949 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 756900 + 66049 = 870^2 + 257^2 .

It is a cyclic number.

It is not a de Polignac number, because 822949 - 2⁷ = 822821 is a prime.

822949 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (822989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 411474 + 411475.

It is an arithmetic number, because the mean of its divisors is an integer number (411475).

2⁸²²⁹⁴⁹ is an apocalyptic number.

It is an amenable number.

822949 is a deficient number, since it is larger than the sum of its proper divisors (1).

822949 is an equidigital number, since it uses as much as digits as its factorization.

822949 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10368, while the sum is 34.

The square root of 822949 is about 907.1653653001. The cubic root of 822949 is about 93.7110866651.

It can be divided in two parts, 822 and 949, that added together give a palindrome (1771).

The spelling of 822949 in words is "eight hundred twenty-two thousand, nine hundred forty-nine".