4139831 has 2 divisors, whose sum is σ = 4139832. Its totient is φ = 4139830.

The previous prime is 4139827. The next prime is 4139873. The reversal of 4139831 is 1389314.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4139831 - 2² = 4139827 is a prime.

It is a super-2 number, since 2×4139831² = 34276401417122, which contains 22 as substring.

It is a Chen prime.

It is a plaindrome in base 12.

It is a junction number, because it is equal to n+sod(n) for n = 4139794 and 4139803.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4139801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2069915 + 2069916.

It is an arithmetic number, because the mean of its divisors is an integer number (2069916).

Almost surely, 2^4139831 is an apocalyptic number.

4139831 is a deficient number, since it is larger than the sum of its proper divisors (1).

4139831 is an equidigital number, since it uses as much as digits as its factorization.

4139831 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2592, while the sum is 29.

The square root of 4139831 is about 2034.6574650294. The cubic root of 4139831 is about 160.5686924318.

The spelling of 4139831 in words is "four million, one hundred thirty-nine thousand, eight hundred thirty-one".