4048639 has 8 divisors (see below), whose sum is σ = 4705920. Its totient is φ = 3411096.

The previous prime is 4048637. The next prime is 4048643. The reversal of 4048639 is 9368404.

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

It is a cyclic number.

It is not a de Polignac number, because 4048639 - 2¹ = 4048637 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4048637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4489 + ... + 5314.

It is an arithmetic number, because the mean of its divisors is an integer number (588240).

Almost surely, 2^4048639 is an apocalyptic number.

4048639 is a deficient number, since it is larger than the sum of its proper divisors (657281).

4048639 is an equidigital number, since it uses as much as digits as its factorization.

4048639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9869.

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 4048639 is about 2012.1230081682. The cubic root of 4048639 is about 159.3809280891.

The spelling of 4048639 in words is "four million, forty-eight thousand, six hundred thirty-nine".