9898723 has 2 divisors, whose sum is σ = 9898724. Its totient is φ = 9898722.

The previous prime is 9898711. The next prime is 9898769. The reversal of 9898723 is 3278989.

9898723 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an a-pointer prime, because the next prime (9898769) can be obtained adding 9898723 to its sum of digits (46).

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9898723 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 (9898783) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4949361 + 4949362.

It is an arithmetic number, because the mean of its divisors is an integer number (4949362).

Almost surely, 2^9898723 is an apocalyptic number.

9898723 is a deficient number, since it is larger than the sum of its proper divisors (1).

9898723 is an equidigital number, since it uses as much as digits as its factorization.

9898723 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 9898723 is about 3146.2236093450. The cubic root of 9898723 is about 214.7136841425.

The spelling of 9898723 in words is "nine million, eight hundred ninety-eight thousand, seven hundred twenty-three".