3933861 has 4 divisors (see below), whose sum is σ = 5245152. Its totient is φ = 2622572.

The previous prime is 3933859. The next prime is 3933871. The reversal of 3933861 is 1683393.

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 3933861 - 2¹ = 3933859 is a prime.

It is a D-number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3933841) 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, 655641 + ... + 655646.

It is an arithmetic number, because the mean of its divisors is an integer number (1311288).

Almost surely, 2^3933861 is an apocalyptic number.

It is an amenable number.

3933861 is a deficient number, since it is larger than the sum of its proper divisors (1311291).

3933861 is a wasteful number, since it uses less digits than its factorization.

3933861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1311290.

The product of its digits is 11664, while the sum is 33.

The square root of 3933861 is about 1983.3963295317. The cubic root of 3933861 is about 157.8603289528.

The spelling of 3933861 in words is "three million, nine hundred thirty-three thousand, eight hundred sixty-one".