3928811 has 2 divisors, whose sum is σ = 3928812. Its totient is φ = 3928810.

The previous prime is 3928807. The next prime is 3928817. The reversal of 3928811 is 1188293.

It is a weak prime.

It is an emirp because it is prime and its reverse (1188293) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3928811 - 2² = 3928807 is a prime.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (3928817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1964405 + 1964406.

It is an arithmetic number, because the mean of its divisors is an integer number (1964406).

Almost surely, 2^3928811 is an apocalyptic number.

3928811 is a deficient number, since it is larger than the sum of its proper divisors (1).

3928811 is an equidigital number, since it uses as much as digits as its factorization.

3928811 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3456, while the sum is 32.

The square root of 3928811 is about 1982.1228518939. The cubic root of 3928811 is about 157.7927502194.

The spelling of 3928811 in words is "three million, nine hundred twenty-eight thousand, eight hundred eleven".