823232749 has 2 divisors, whose sum is σ = 823232750. Its totient is φ = 823232748.

The previous prime is 823232743. The next prime is 823232771. The reversal of 823232749 is 947232328.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 746109225 + 77123524 = 27315^2 + 8782^2 .

It is a cyclic number.

It is not a de Polignac number, because 823232749 - 2⁹ = 823232237 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (823232743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 411616374 + 411616375.

It is an arithmetic number, because the mean of its divisors is an integer number (411616375).

Almost surely, 2^823232749 is an apocalyptic number.

It is an amenable number.

823232749 is a deficient number, since it is larger than the sum of its proper divisors (1).

823232749 is an equidigital number, since it uses as much as digits as its factorization.

823232749 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 145152, while the sum is 40.

The square root of 823232749 is about 28692.0328488589. The cubic root of 823232749 is about 937.2185581020.

The spelling of 823232749 in words is "eight hundred twenty-three million, two hundred thirty-two thousand, seven hundred forty-nine".