817164949 has 2 divisors, whose sum is σ = 817164950. Its totient is φ = 817164948.

The previous prime is 817164937. The next prime is 817164989. The reversal of 817164949 is 949461718.

817164949 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 can be written as a sum of positive squares in only one way, i.e., 464100849 + 353064100 = 21543^2 + 18790^2 .

It is a cyclic number.

It is not a de Polignac number, because 817164949 - 2¹¹ = 817162901 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (817164989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 408582474 + 408582475.

It is an arithmetic number, because the mean of its divisors is an integer number (408582475).

Almost surely, 2^817164949 is an apocalyptic number.

It is an amenable number.

817164949 is a deficient number, since it is larger than the sum of its proper divisors (1).

817164949 is an equidigital number, since it uses as much as digits as its factorization.

817164949 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 435456, while the sum is 49.

The square root of 817164949 is about 28586.0971277997. The cubic root of 817164949 is about 934.9102257787.

The spelling of 817164949 in words is "eight hundred seventeen million, one hundred sixty-four thousand, nine hundred forty-nine".