105115489 has 2 divisors, whose sum is σ = 105115490. Its totient is φ = 105115488.

The previous prime is 105115469. The next prime is 105115511. The reversal of 105115489 is 984511501.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 61779600 + 43335889 = 7860^2 + 6583^2 .

It is an emirp because it is prime and its reverse (984511501) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 105115489 - 2²³ = 96726881 is a prime.

It is a super-2 number, since 2×105115489² = 22098532055418242, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (105115469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52557744 + 52557745.

It is an arithmetic number, because the mean of its divisors is an integer number (52557745).

Almost surely, 2^105115489 is an apocalyptic number.

It is an amenable number.

105115489 is a deficient number, since it is larger than the sum of its proper divisors (1).

105115489 is an equidigital number, since it uses as much as digits as its factorization.

105115489 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7200, while the sum is 34.

The square root of 105115489 is about 10252.5845034313. The cubic root of 105115489 is about 471.9423002938.

The spelling of 105115489 in words is "one hundred five million, one hundred fifteen thousand, four hundred eighty-nine".