39996401 has 2 divisors, whose sum is σ = 39996402. Its totient is φ = 39996400.

The previous prime is 39996391. The next prime is 39996403. The reversal of 39996401 is 10469993.

39996401 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23512801 + 16483600 = 4849^2 + 4060^2 .

It is an emirp because it is prime and its reverse (10469993) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 39996401 - 2⁶ = 39996337 is a prime.

Together with 39996403, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (39996403) 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, 19998200 + 19998201.

It is an arithmetic number, because the mean of its divisors is an integer number (19998201).

Almost surely, 2^39996401 is an apocalyptic number.

It is an amenable number.

39996401 is a deficient number, since it is larger than the sum of its proper divisors (1).

39996401 is an equidigital number, since it uses as much as digits as its factorization.

39996401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 52488, while the sum is 41.

The square root of 39996401 is about 6324.2707880039. The cubic root of 39996401 is about 341.9849320220.

The spelling of 39996401 in words is "thirty-nine million, nine hundred ninety-six thousand, four hundred one".