4145489 has 4 divisors (see below), whose sum is σ = 4188324. Its totient is φ = 4102656.

The previous prime is 4145473. The next prime is 4145503. The reversal of 4145489 is 9845414.

4145489 = T₁₀₂ + T₁₀₃ + ... + T₂₉₅.

It is a happy number.

4145489 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2455489 + 1690000 = 1567^2 + 1300^2 .

It is a cyclic number.

It is not a de Polignac number, because 4145489 - 2⁴ = 4145473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4145419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21272 + ... + 21465.

It is an arithmetic number, because the mean of its divisors is an integer number (1047081).

Almost surely, 2^4145489 is an apocalyptic number.

It is an amenable number.

4145489 is a deficient number, since it is larger than the sum of its proper divisors (42835).

4145489 is an equidigital number, since it uses as much as digits as its factorization.

4145489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42834.

The product of its digits is 23040, while the sum is 35.

The square root of 4145489 is about 2036.0473963049. The cubic root of 4145489 is about 160.6418100774.

The spelling of 4145489 in words is "four million, one hundred forty-five thousand, four hundred eighty-nine".