105641489 has 2 divisors, whose sum is σ = 105641490. Its totient is φ = 105641488.

The previous prime is 105641479. The next prime is 105641509. The reversal of 105641489 is 984146501.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 104387089 + 1254400 = 10217^2 + 1120^2 .

It is a cyclic number.

It is not a de Polignac number, because 105641489 - 2⁸ = 105641233 is a prime.

It is a super-2 number, since 2×105641489² = 22320248396274242, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (105641449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52820744 + 52820745.

It is an arithmetic number, because the mean of its divisors is an integer number (52820745).

Almost surely, 2^105641489 is an apocalyptic number.

It is an amenable number.

105641489 is a deficient number, since it is larger than the sum of its proper divisors (1).

105641489 is an equidigital number, since it uses as much as digits as its factorization.

105641489 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34560, while the sum is 38.

The square root of 105641489 is about 10278.2045611089. The cubic root of 105641489 is about 472.7281937617.

The spelling of 105641489 in words is "one hundred five million, six hundred forty-one thousand, four hundred eighty-nine".