4139811 has 24 divisors (see below), whose sum is σ = 6604416. Its totient is φ = 2482560.

The previous prime is 4139809. The next prime is 4139827. The reversal of 4139811 is 1189314.

It is not a de Polignac number, because 4139811 - 2¹ = 4139809 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4139801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4366 + ... + 5228.

It is an arithmetic number, because the mean of its divisors is an integer number (275184).

Almost surely, 2^4139811 is an apocalyptic number.

4139811 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

4139811 is a deficient number, since it is larger than the sum of its proper divisors (2464605).

4139811 is a wasteful number, since it uses less digits than its factorization.

4139811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 923 (or 920 counting only the distinct ones).

The product of its digits is 864, while the sum is 27.

The square root of 4139811 is about 2034.6525501913. The cubic root of 4139811 is about 160.5684338561.

It can be divided in two parts, 4139 and 811, that added together give a triangular number (4950 = T₉₉).

The spelling of 4139811 in words is "four million, one hundred thirty-nine thousand, eight hundred eleven".