3845639 has 8 divisors (see below), whose sum is σ = 4448640. Its totient is φ = 3256056.

The previous prime is 3845593. The next prime is 3845651. The reversal of 3845639 is 9365483.

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 3845639 - 2²⁰ = 2797063 is a prime.

It is a plaindrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3845539) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2729 + ... + 3890.

It is an arithmetic number, because the mean of its divisors is an integer number (556080).

Almost surely, 2^3845639 is an apocalyptic number.

3845639 is a deficient number, since it is larger than the sum of its proper divisors (603001).

3845639 is an equidigital number, since it uses as much as digits as its factorization.

3845639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6709.

The product of its digits is 77760, while the sum is 38.

The square root of 3845639 is about 1961.0300864597. The cubic root of 3845639 is about 156.6713207209.

The spelling of 3845639 in words is "three million, eight hundred forty-five thousand, six hundred thirty-nine".