912662921 has 2 divisors, whose sum is σ = 912662922. Its totient is φ = 912662920.

The previous prime is 912662869. The next prime is 912662923. The reversal of 912662921 is 129266219.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 598487296 + 314175625 = 24464^2 + 17725^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-912662921 is a prime.

Together with 912662923, 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 (912662923) 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, 456331460 + 456331461.

It is an arithmetic number, because the mean of its divisors is an integer number (456331461).

Almost surely, 2^912662921 is an apocalyptic number.

It is an amenable number.

912662921 is a deficient number, since it is larger than the sum of its proper divisors (1).

912662921 is an equidigital number, since it uses as much as digits as its factorization.

912662921 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23328, while the sum is 38.

The square root of 912662921 is about 30210.3115012077. The cubic root of 912662921 is about 969.9964292921.

The spelling of 912662921 in words is "nine hundred twelve million, six hundred sixty-two thousand, nine hundred twenty-one".