4289981 has 4 divisors (see below), whose sum is σ = 4389792. Its totient is φ = 4190172.

The previous prime is 4289977. The next prime is 4290017. The reversal of 4289981 is 1899824.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 4289981 - 2² = 4289977 is a prime.

It is a super-2 number, since 2×4289981² = 36807873960722, 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 (4289911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49841 + ... + 49926.

It is an arithmetic number, because the mean of its divisors is an integer number (1097448).

Almost surely, 2^4289981 is an apocalyptic number.

It is an amenable number.

4289981 is a deficient number, since it is larger than the sum of its proper divisors (99811).

4289981 is an equidigital number, since it uses as much as digits as its factorization.

4289981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99810.

The product of its digits is 41472, while the sum is 41.

The square root of 4289981 is about 2071.2269310725. The cubic root of 4289981 is about 162.4869385952.

The spelling of 4289981 in words is "four million, two hundred eighty-nine thousand, nine hundred eighty-one".