9894923 has 2 divisors, whose sum is σ = 9894924. Its totient is φ = 9894922.

The previous prime is 9894919. The next prime is 9894967. The reversal of 9894923 is 3294989.

It is an a-pointer prime, because the next prime (9894967) can be obtained adding 9894923 to its sum of digits (44).

It is a weak prime.

It is an emirp because it is prime and its reverse (3294989) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9894923 - 2² = 9894919 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is not a weakly prime, because it can be changed into another prime (9894023) 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, 4947461 + 4947462.

It is an arithmetic number, because the mean of its divisors is an integer number (4947462).

Almost surely, 2^9894923 is an apocalyptic number.

9894923 is a deficient number, since it is larger than the sum of its proper divisors (1).

9894923 is an equidigital number, since it uses as much as digits as its factorization.

9894923 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 139968, while the sum is 44.

The square root of 9894923 is about 3145.6196527870. The cubic root of 9894923 is about 214.6862052973.

The spelling of 9894923 in words is "nine million, eight hundred ninety-four thousand, nine hundred twenty-three".