4289861 has 2 divisors, whose sum is σ = 4289862. Its totient is φ = 4289860.

The previous prime is 4289849. The next prime is 4289869. The reversal of 4289861 is 1689824.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2825761 + 1464100 = 1681^2 + 1210^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4289861 is a prime.

It is a Chen prime.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4289869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2144930 + 2144931.

It is an arithmetic number, because the mean of its divisors is an integer number (2144931).

Almost surely, 2^4289861 is an apocalyptic number.

It is an amenable number.

4289861 is a deficient number, since it is larger than the sum of its proper divisors (1).

4289861 is an equidigital number, since it uses as much as digits as its factorization.

4289861 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27648, while the sum is 38.

The square root of 4289861 is about 2071.1979625328. The cubic root of 4289861 is about 162.4854235446.

The spelling of 4289861 in words is "four million, two hundred eighty-nine thousand, eight hundred sixty-one".