912381647 has 2 divisors, whose sum is σ = 912381648. Its totient is φ = 912381646.

The previous prime is 912381607. The next prime is 912381671. The reversal of 912381647 is 746183219.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 912381647 - 2¹⁴ = 912365263 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (912381607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 456190823 + 456190824.

It is an arithmetic number, because the mean of its divisors is an integer number (456190824).

Almost surely, 2^912381647 is an apocalyptic number.

912381647 is a deficient number, since it is larger than the sum of its proper divisors (1).

912381647 is an equidigital number, since it uses as much as digits as its factorization.

912381647 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72576, while the sum is 41.

The square root of 912381647 is about 30205.6558776664. The cubic root of 912381647 is about 969.8967711736.

The spelling of 912381647 in words is "nine hundred twelve million, three hundred eighty-one thousand, six hundred forty-seven".