986873488921 has 2 divisors, whose sum is σ = 986873488922. Its totient is φ = 986873488920.

The previous prime is 986873488901. The next prime is 986873489047. The reversal of 986873488921 is 129884378689.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 900458655625 + 86414833296 = 948925^2 + 293964^2 .

It is a cyclic number.

It is not a de Polignac number, because 986873488921 - 2⁵ = 986873488889 is a prime.

It is not a weakly prime, because it can be changed into another prime (986873488901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 493436744460 + 493436744461.

It is an arithmetic number, because the mean of its divisors is an integer number (493436744461).

Almost surely, 2^986873488921 is an apocalyptic number.

It is an amenable number.

986873488921 is a deficient number, since it is larger than the sum of its proper divisors (1).

986873488921 is an equidigital number, since it uses as much as digits as its factorization.

986873488921 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 334430208, while the sum is 73.

The spelling of 986873488921 in words is "nine hundred eighty-six billion, eight hundred seventy-three million, four hundred eighty-eight thousand, nine hundred twenty-one".