100560989 has 2 divisors, whose sum is σ = 100560990. Its totient is φ = 100560988.

The previous prime is 100560979. The next prime is 100561007. The reversal of 100560989 is 989065001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 96727225 + 3833764 = 9835^2 + 1958^2 .

It is a cyclic number.

It is not a de Polignac number, because 100560989 - 2⁴ = 100560973 is a prime.

It is a super-2 number, since 2×100560989² = 20225025017316242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100560919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50280494 + 50280495.

It is an arithmetic number, because the mean of its divisors is an integer number (50280495).

Almost surely, 2^100560989 is an apocalyptic number.

It is an amenable number.

100560989 is a deficient number, since it is larger than the sum of its proper divisors (1).

100560989 is an equidigital number, since it uses as much as digits as its factorization.

100560989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19440, while the sum is 38.

The square root of 100560989 is about 10028.0102213749. The cubic root of 100560989 is about 465.0252254400.

The spelling of 100560989 in words is "one hundred million, five hundred sixty thousand, nine hundred eighty-nine".