9890501 has 2 divisors, whose sum is σ = 9890502. Its totient is φ = 9890500.

The previous prime is 9890467. The next prime is 9890509. The reversal of 9890501 is 1050989.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7845601 + 2044900 = 2801^2 + 1430^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9890501 is a prime.

It is an Ulam number.

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

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9890509) 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, 4945250 + 4945251.

It is an arithmetic number, because the mean of its divisors is an integer number (4945251).

Almost surely, 2^9890501 is an apocalyptic number.

It is an amenable number.

9890501 is a deficient number, since it is larger than the sum of its proper divisors (1).

9890501 is an equidigital number, since it uses as much as digits as its factorization.

9890501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3240, while the sum is 32.

The square root of 9890501 is about 3144.9166920604. The cubic root of 9890501 is about 214.6542197409.

The spelling of 9890501 in words is "nine million, eight hundred ninety thousand, five hundred one".