4288981 has 4 divisors (see below), whose sum is σ = 4541292. Its totient is φ = 4036672.

The previous prime is 4288979. The next prime is 4288993. The reversal of 4288981 is 1898824.

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 3964081 + 324900 = 1991^2 + 570^2 .

It is a cyclic number.

It is not a de Polignac number, because 4288981 - 2¹ = 4288979 is a prime.

It is a super-2 number, since 2×4288981² = 36790716036722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4288901) 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, 126130 + ... + 126163.

It is an arithmetic number, because the mean of its divisors is an integer number (1135323).

Almost surely, 2^4288981 is an apocalyptic number.

It is an amenable number.

4288981 is a deficient number, since it is larger than the sum of its proper divisors (252311).

4288981 is a wasteful number, since it uses less digits than its factorization.

4288981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252310.

The product of its digits is 36864, while the sum is 40.

The square root of 4288981 is about 2070.9855141937. The cubic root of 4288981 is about 162.4743123104.

It can be divided in two parts, 428 and 8981, that added together give a square (9409 = 97²).

The spelling of 4288981 in words is "four million, two hundred eighty-eight thousand, nine hundred eighty-one".