3933845 has 6 divisors (see below), whose sum is σ = 4725942. Its totient is φ = 3143528.

The previous prime is 3933841. The next prime is 3933857. The reversal of 3933845 is 5483393.

It can be written as a sum of positive squares in only one way, i.e., 3147076 + 786769 = 1774^2 + 887^2 .

It is not a de Polignac number, because 3933845 - 2² = 3933841 is a prime.

It is a Duffinian 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 5 ways as a sum of consecutive naturals, for example, 3992 + ... + 4878.

It is an arithmetic number, because the mean of its divisors is an integer number (787657).

Almost surely, 2^3933845 is an apocalyptic number.

It is an amenable number.

3933845 is a deficient number, since it is larger than the sum of its proper divisors (792097).

3933845 is an frugal number, since it uses more digits than its factorization.

3933845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1779 (or 892 counting only the distinct ones).

The product of its digits is 38880, while the sum is 35.

The square root of 3933845 is about 1983.3922960423. The cubic root of 3933845 is about 157.8601149333.

The spelling of 3933845 in words is "three million, nine hundred thirty-three thousand, eight hundred forty-five".