822149149 has 2 divisors, whose sum is σ = 822149150. Its totient is φ = 822149148.

The previous prime is 822149147. The next prime is 822149203. The reversal of 822149149 is 941941228.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 774787225 + 47361924 = 27835^2 + 6882^2 .

It is a cyclic number.

It is not a de Polignac number, because 822149149 - 2¹ = 822149147 is a prime.

Together with 822149147, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (822149143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 411074574 + 411074575.

It is an arithmetic number, because the mean of its divisors is an integer number (411074575).

Almost surely, 2^822149149 is an apocalyptic number.

It is an amenable number.

822149149 is a deficient number, since it is larger than the sum of its proper divisors (1).

822149149 is an equidigital number, since it uses as much as digits as its factorization.

822149149 is an evil number, because the sum of its binary digits is even.

The product of its digits is 41472, while the sum is 40.

The square root of 822149149 is about 28673.1433400665. The cubic root of 822149149 is about 936.8071653553.

The spelling of 822149149 in words is "eight hundred twenty-two million, one hundred forty-nine thousand, one hundred forty-nine".