39964423 has 2 divisors, whose sum is σ = 39964424. Its totient is φ = 39964422.

The previous prime is 39964369. The next prime is 39964447. The reversal of 39964423 is 32446993.

39964423 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 is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-39964423 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (39961423) 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, 19982211 + 19982212.

It is an arithmetic number, because the mean of its divisors is an integer number (19982212).

Almost surely, 2^39964423 is an apocalyptic number.

39964423 is a deficient number, since it is larger than the sum of its proper divisors (1).

39964423 is an equidigital number, since it uses as much as digits as its factorization.

39964423 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 139968, while the sum is 40.

The square root of 39964423 is about 6321.7420858494. The cubic root of 39964423 is about 341.8937662362.

The spelling of 39964423 in words is "thirty-nine million, nine hundred sixty-four thousand, four hundred twenty-three".