39884393 has 2 divisors, whose sum is σ = 39884394. Its totient is φ = 39884392.

The previous prime is 39884389. The next prime is 39884407. The reversal of 39884393 is 39348893.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25836889 + 14047504 = 5083^2 + 3748^2 .

It is a cyclic number.

It is not a de Polignac number, because 39884393 - 2² = 39884389 is a prime.

It is not a weakly prime, because it can be changed into another prime (39884303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19942196 + 19942197.

It is an arithmetic number, because the mean of its divisors is an integer number (19942197).

Almost surely, 2^39884393 is an apocalyptic number.

It is an amenable number.

39884393 is a deficient number, since it is larger than the sum of its proper divisors (1).

39884393 is an equidigital number, since it uses as much as digits as its factorization.

39884393 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 559872, while the sum is 47.

The square root of 39884393 is about 6315.4091712256. The cubic root of 39884393 is about 341.6653960955.

The spelling of 39884393 in words is "thirty-nine million, eight hundred eighty-four thousand, three hundred ninety-three".