4031399 has 2 divisors, whose sum is σ = 4031400. Its totient is φ = 4031398.

The previous prime is 4031389. The next prime is 4031441. The reversal of 4031399 is 9931304.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4031399 - 2²⁰ = 2982823 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4031369) 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 as a sum of consecutive naturals, namely, 2015699 + 2015700.

It is an arithmetic number, because the mean of its divisors is an integer number (2015700).

Almost surely, 2^4031399 is an apocalyptic number.

4031399 is a deficient number, since it is larger than the sum of its proper divisors (1).

4031399 is an equidigital number, since it uses as much as digits as its factorization.

4031399 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2916, while the sum is 29.

The square root of 4031399 is about 2007.8344055225. The cubic root of 4031399 is about 159.1543798099.

The spelling of 4031399 in words is "four million, thirty-one thousand, three hundred ninety-nine".