4289638 has 8 divisors (see below), whose sum is σ = 6714288. Its totient is φ = 2051544.

The previous prime is 4289633. The next prime is 4289639. The reversal of 4289638 is 8369824.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a d-powerful number, because it can be written as 4⁷ + 2 + 8⁷ + 9⁵ + 6³ + 3⁹ + 8⁷ .

It is a self number, because there is not a number n which added to its sum of digits gives 4289638.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4289633) 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, 46581 + ... + 46672.

It is an arithmetic number, because the mean of its divisors is an integer number (839286).

Almost surely, 2^4289638 is an apocalyptic number.

4289638 is a deficient number, since it is larger than the sum of its proper divisors (2424650).

4289638 is a wasteful number, since it uses less digits than its factorization.

4289638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93278.

The product of its digits is 82944, while the sum is 40.

The square root of 4289638 is about 2071.1441282538. The cubic root of 4289638 is about 162.4826080006.

The spelling of 4289638 in words is "four million, two hundred eighty-nine thousand, six hundred thirty-eight".