86980189 has 2 divisors, whose sum is σ = 86980190. Its totient is φ = 86980188.

The previous prime is 86980163. The next prime is 86980241. The reversal of 86980189 is 98108968.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 83576164 + 3404025 = 9142^2 + 1845^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-86980189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86980139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43490094 + 43490095.

It is an arithmetic number, because the mean of its divisors is an integer number (43490095).

Almost surely, 2^86980189 is an apocalyptic number.

It is an amenable number.

86980189 is a deficient number, since it is larger than the sum of its proper divisors (1).

86980189 is an equidigital number, since it uses as much as digits as its factorization.

86980189 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 248832, while the sum is 49.

The square root of 86980189 is about 9326.3170115539. The cubic root of 86980189 is about 443.0711260972.

The spelling of 86980189 in words is "eighty-six million, nine hundred eighty thousand, one hundred eighty-nine".