9890873 has 2 divisors, whose sum is σ = 9890874. Its totient is φ = 9890872.

The previous prime is 9890869. The next prime is 9890899. The reversal of 9890873 is 3780989.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7661824 + 2229049 = 2768^2 + 1493^2 .

It is an emirp because it is prime and its reverse (3780989) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9890873 - 2² = 9890869 is a prime.

It is a plaindrome in base 14.

It is not a weakly prime, because it can be changed into another prime (9890813) 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, 4945436 + 4945437.

It is an arithmetic number, because the mean of its divisors is an integer number (4945437).

Almost surely, 2^9890873 is an apocalyptic number.

It is an amenable number.

9890873 is a deficient number, since it is larger than the sum of its proper divisors (1).

9890873 is an equidigital number, since it uses as much as digits as its factorization.

9890873 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108864, while the sum is 44.

The square root of 9890873 is about 3144.9758345653. The cubic root of 9890873 is about 214.6569108877.

The spelling of 9890873 in words is "nine million, eight hundred ninety thousand, eight hundred seventy-three".