4288861 has 4 divisors (see below), whose sum is σ = 4301500. Its totient is φ = 4276224.

The previous prime is 4288847. The next prime is 4288873. The reversal of 4288861 is 1688824.

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 3308761 + 980100 = 1819^2 + 990^2 .

It is a cyclic number.

It is not a de Polignac number, because 4288861 - 2⁷ = 4288733 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4288861.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4283861) 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, 5796 + ... + 6493.

It is an arithmetic number, because the mean of its divisors is an integer number (1075375).

Almost surely, 2^4288861 is an apocalyptic number.

It is an amenable number.

4288861 is a deficient number, since it is larger than the sum of its proper divisors (12639).

4288861 is a wasteful number, since it uses less digits than its factorization.

4288861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12638.

The product of its digits is 24576, while the sum is 37.

The square root of 4288861 is about 2070.9565422770. The cubic root of 4288861 is about 162.4727970243.

Subtracting from 4288861 its sum of digits (37), we obtain a palindrome (4288824).

The spelling of 4288861 in words is "four million, two hundred eighty-eight thousand, eight hundred sixty-one".