912649 has 2 divisors, whose sum is σ = 912650. Its totient is φ = 912648.

The previous prime is 912647. The next prime is 912727. The reversal of 912649 is 946219.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 822649 + 90000 = 907^2 + 300^2 .

It is a cyclic number.

It is not a de Polignac number, because 912649 - 2¹ = 912647 is a prime.

Together with 912647, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 912649.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (912647) 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, 456324 + 456325.

It is an arithmetic number, because the mean of its divisors is an integer number (456325).

2⁹¹²⁶⁴⁹ is an apocalyptic number.

It is an amenable number.

912649 is a deficient number, since it is larger than the sum of its proper divisors (1).

912649 is an equidigital number, since it uses as much as digits as its factorization.

912649 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3888, while the sum is 31.

The square root of 912649 is about 955.3266457082. The cubic root of 912649 is about 96.9991497428. Note that the first 3 decimals are identical.

The spelling of 912649 in words is "nine hundred twelve thousand, six hundred forty-nine".