9878923 has 2 divisors, whose sum is σ = 9878924. Its totient is φ = 9878922.

The previous prime is 9878903. The next prime is 9878927. The reversal of 9878923 is 3298789.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9878923 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 (9878927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4939461 + 4939462.

It is an arithmetic number, because the mean of its divisors is an integer number (4939462).

Almost surely, 2^9878923 is an apocalyptic number.

9878923 is a deficient number, since it is larger than the sum of its proper divisors (1).

9878923 is an equidigital number, since it uses as much as digits as its factorization.

9878923 is an evil number, because the sum of its binary digits is even.

The product of its digits is 217728, while the sum is 46.

The square root of 9878923 is about 3143.0754047588. The cubic root of 9878923 is about 214.5704276609.

It can be divided in two parts, 9878 and 923, that added together give a palindrome (10801).

The spelling of 9878923 in words is "nine million, eight hundred seventy-eight thousand, nine hundred twenty-three".