105086489 has 2 divisors, whose sum is σ = 105086490. Its totient is φ = 105086488.

The previous prime is 105086479. The next prime is 105086491. The reversal of 105086489 is 984680501.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 72505225 + 32581264 = 8515^2 + 5708^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-105086489 is a prime.

It is a super-2 number, since 2×105086489² = 22086340340694242, which contains 22 as substring.

Together with 105086491, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (105086419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52543244 + 52543245.

It is an arithmetic number, because the mean of its divisors is an integer number (52543245).

Almost surely, 2^105086489 is an apocalyptic number.

It is an amenable number.

105086489 is a deficient number, since it is larger than the sum of its proper divisors (1).

105086489 is an equidigital number, since it uses as much as digits as its factorization.

105086489 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 69120, while the sum is 41.

The square root of 105086489 is about 10251.1701283317. The cubic root of 105086489 is about 471.8988953822.

The spelling of 105086489 in words is "one hundred five million, eighty-six thousand, four hundred eighty-nine".