4039397 has 2 divisors, whose sum is σ = 4039398. Its totient is φ = 4039396.

The previous prime is 4039391. The next prime is 4039429. The reversal of 4039397 is 7939304.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3500641 + 538756 = 1871^2 + 734^2 .

It is a cyclic number.

It is not a de Polignac number, because 4039397 - 2⁶ = 4039333 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4039391) 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, 2019698 + 2019699.

It is an arithmetic number, because the mean of its divisors is an integer number (2019699).

Almost surely, 2^4039397 is an apocalyptic number.

It is an amenable number.

4039397 is a deficient number, since it is larger than the sum of its proper divisors (1).

4039397 is an equidigital number, since it uses as much as digits as its factorization.

4039397 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20412, while the sum is 35.

The square root of 4039397 is about 2009.8251167701. The cubic root of 4039397 is about 159.2595604899.

The spelling of 4039397 in words is "four million, thirty-nine thousand, three hundred ninety-seven".