4139999 has 2 divisors, whose sum is σ = 4140000. Its totient is φ = 4139998.

The previous prime is 4139983. The next prime is 4140001. The reversal of 4139999 is 9999314.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 4139999 - 2⁴ = 4139983 is a prime.

Together with 4140001, it forms a pair of twin primes.

It is a Chen prime.

4139999 is a modest number, since divided by 9999 gives 413 as remainder.

It is a plaindrome in base 12.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4139909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2069999 + 2070000.

It is an arithmetic number, because the mean of its divisors is an integer number (2070000).

Almost surely, 2^4139999 is an apocalyptic number.

4139999 is a deficient number, since it is larger than the sum of its proper divisors (1).

4139999 is an equidigital number, since it uses as much as digits as its factorization.

4139999 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 78732, while the sum is 44.

The square root of 4139999 is about 2034.6987492010. The cubic root of 4139999 is about 160.5708644347.

The spelling of 4139999 in words is "four million, one hundred thirty-nine thousand, nine hundred ninety-nine".