3849621 has 4 divisors (see below), whose sum is σ = 5132832. Its totient is φ = 2566412.

The previous prime is 3849617. The next prime is 3849653. The reversal of 3849621 is 1269483.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3849621 - 2² = 3849617 is a prime.

It is an Ulam number.

It is a d-powerful number, because it can be written as 3⁵ + 8³ + 4⁸ + 9⁴ + 6⁸ + 2²¹ + 1 .

It is a D-number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3849421) 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, 641601 + ... + 641606.

It is an arithmetic number, because the mean of its divisors is an integer number (1283208).

Almost surely, 2^3849621 is an apocalyptic number.

It is an amenable number.

3849621 is a deficient number, since it is larger than the sum of its proper divisors (1283211).

3849621 is a wasteful number, since it uses less digits than its factorization.

3849621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1283210.

The product of its digits is 10368, while the sum is 33.

The square root of 3849621 is about 1962.0451065151. The cubic root of 3849621 is about 156.7253776231.

The spelling of 3849621 in words is "three million, eight hundred forty-nine thousand, six hundred twenty-one".