3846639 has 4 divisors (see below), whose sum is σ = 5128856. Its totient is φ = 2564424.

The previous prime is 3846629. The next prime is 3846643. The reversal of 3846639 is 9366483.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 3846639 - 2⁹ = 3846127 is a prime.

It is a d-powerful number, because it can be written as 3³ + 8⁷ + 4⁷ + 6⁶ + 6⁸ + 3⁵ + 9⁴ .

It is a D-number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3846597 and 3846606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3846629) 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, 641104 + ... + 641109.

It is an arithmetic number, because the mean of its divisors is an integer number (1282214).

Almost surely, 2^3846639 is an apocalyptic number.

3846639 is a deficient number, since it is larger than the sum of its proper divisors (1282217).

3846639 is a wasteful number, since it uses less digits than its factorization.

3846639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1282216.

The product of its digits is 93312, while the sum is 39.

The square root of 3846639 is about 1961.2850379279. The cubic root of 3846639 is about 156.6848995429.

The spelling of 3846639 in words is "three million, eight hundred forty-six thousand, six hundred thirty-nine".