3928843 has 2 divisors, whose sum is σ = 3928844. Its totient is φ = 3928842.

The previous prime is 3928831. The next prime is 3928849. The reversal of 3928843 is 3488293.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 3928843 - 2⁵ = 3928811 is a prime.

3928843 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (3928849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1964421 + 1964422.

It is an arithmetic number, because the mean of its divisors is an integer number (1964422).

Almost surely, 2^3928843 is an apocalyptic number.

3928843 is a deficient number, since it is larger than the sum of its proper divisors (1).

3928843 is an equidigital number, since it uses as much as digits as its factorization.

3928843 is an evil number, because the sum of its binary digits is even.

The product of its digits is 41472, while the sum is 37.

The square root of 3928843 is about 1982.1309240310. The cubic root of 3928843 is about 157.7931786233.

It can be divided in two parts, 39 and 28843, that added together give a palindrome (28882).

The spelling of 3928843 in words is "three million, nine hundred twenty-eight thousand, eight hundred forty-three".