3838639 has 8 divisors (see below), whose sum is σ = 4505888. Its totient is φ = 3201120.

The previous prime is 3838621. The next prime is 3838657. The reversal of 3838639 is 9368383.

It is an interprime number because it is at equal distance from previous prime (3838621) and next prime (3838657).

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3838639 is a prime.

It is a super-3 number, since 3×3838639³ (a number of 21 digits) contains 333 as substring.

It is a Duffinian number.

3838639 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3838609) 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 7 ways as a sum of consecutive naturals, for example, 7152 + ... + 7669.

It is an arithmetic number, because the mean of its divisors is an integer number (563236).

Almost surely, 2^3838639 is an apocalyptic number.

3838639 is a deficient number, since it is larger than the sum of its proper divisors (667249).

3838639 is a wasteful number, since it uses less digits than its factorization.

3838639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14865.

The product of its digits is 93312, while the sum is 40.

The square root of 3838639 is about 1959.2444972489. The cubic root of 3838639 is about 156.5762029924.

The spelling of 3838639 in words is "three million, eight hundred thirty-eight thousand, six hundred thirty-nine".