4289681 has 4 divisors (see below), whose sum is σ = 4679664. Its totient is φ = 3899700.

The previous prime is 4289657. The next prime is 4289683. The reversal of 4289681 is 1869824.

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 4289681 - 2⁶ = 4289617 is a prime.

It is a super-4 number, since 4×4289681⁴ (a number of 28 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (4289683) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 194975 + ... + 194996.

It is an arithmetic number, because the mean of its divisors is an integer number (1169916).

Almost surely, 2^4289681 is an apocalyptic number.

It is an amenable number.

4289681 is a deficient number, since it is larger than the sum of its proper divisors (389983).

4289681 is a wasteful number, since it uses less digits than its factorization.

4289681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 389982.

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

The square root of 4289681 is about 2071.1545089635. The cubic root of 4289681 is about 162.4831509158.

The spelling of 4289681 in words is "four million, two hundred eighty-nine thousand, six hundred eighty-one".