9873557 has 2 divisors, whose sum is σ = 9873558. Its totient is φ = 9873556.

The previous prime is 9873527. The next prime is 9873569. The reversal of 9873557 is 7553789.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6754801 + 3118756 = 2599^2 + 1766^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9873557 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9873527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4936778 + 4936779.

It is an arithmetic number, because the mean of its divisors is an integer number (4936779).

Almost surely, 2^9873557 is an apocalyptic number.

It is an amenable number.

9873557 is a deficient number, since it is larger than the sum of its proper divisors (1).

9873557 is an equidigital number, since it uses as much as digits as its factorization.

9873557 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 264600, while the sum is 44.

The square root of 9873557 is about 3142.2216662737. The cubic root of 9873557 is about 214.5315707448.

The spelling of 9873557 in words is "nine million, eight hundred seventy-three thousand, five hundred fifty-seven".