4289689861 has 2 divisors, whose sum is σ = 4289689862. Its totient is φ = 4289689860.

The previous prime is 4289689853. The next prime is 4289689871. The reversal of 4289689861 is 1689869824.

4289689861 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2543285761 + 1746404100 = 50431^2 + 41790^2 .

It is a cyclic number.

It is not a de Polignac number, because 4289689861 - 2³ = 4289689853 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4289689861.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4289689801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2144844930 + 2144844931.

It is an arithmetic number, because the mean of its divisors is an integer number (2144844931).

Almost surely, 2^4289689861 is an apocalyptic number.

It is an amenable number.

4289689861 is a deficient number, since it is larger than the sum of its proper divisors (1).

4289689861 is an equidigital number, since it uses as much as digits as its factorization.

4289689861 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11943936, while the sum is 61.

The square root of 4289689861 is about 65495.7239901965. The cubic root of 4289689861 is about 1624.8326279371.

The spelling of 4289689861 in words is "four billion, two hundred eighty-nine million, six hundred eighty-nine thousand, eight hundred sixty-one".