10987189 has 2 divisors, whose sum is σ = 10987190. Its totient is φ = 10987188.

The previous prime is 10987183. The next prime is 10987247. The reversal of 10987189 is 98178901.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7535025 + 3452164 = 2745^2 + 1858^2 .

It is a cyclic number.

It is not a de Polignac number, because 10987189 - 2³ = 10987181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10987181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5493594 + 5493595.

It is an arithmetic number, because the mean of its divisors is an integer number (5493595).

Almost surely, 2^10987189 is an apocalyptic number.

It is an amenable number.

10987189 is a deficient number, since it is larger than the sum of its proper divisors (1).

10987189 is an equidigital number, since it uses as much as digits as its factorization.

10987189 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36288, while the sum is 43.

The square root of 10987189 is about 3314.6928967855. The cubic root of 10987189 is about 222.3116379151.

The spelling of 10987189 in words is "ten million, nine hundred eighty-seven thousand, one hundred eighty-nine".