912824321 has 2 divisors, whose sum is σ = 912824322. Its totient is φ = 912824320.

The previous prime is 912824279. The next prime is 912824323. The reversal of 912824321 is 123428219.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 681784321 + 231040000 = 26111^2 + 15200^2 .

It is a cyclic number.

It is not a de Polignac number, because 912824321 - 2⁶ = 912824257 is a prime.

It is a super-2 number, since 2×912824321² = 1666496482018222082, which contains 22 as substring.

Together with 912824323, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (912824323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 456412160 + 456412161.

It is an arithmetic number, because the mean of its divisors is an integer number (456412161).

Almost surely, 2^912824321 is an apocalyptic number.

It is an amenable number.

912824321 is a deficient number, since it is larger than the sum of its proper divisors (1).

912824321 is an equidigital number, since it uses as much as digits as its factorization.

912824321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6912, while the sum is 32.

The square root of 912824321 is about 30212.9826564674. The cubic root of 912824321 is about 970.0536056392.

The spelling of 912824321 in words is "nine hundred twelve million, eight hundred twenty-four thousand, three hundred twenty-one".