39964369 has 2 divisors, whose sum is σ = 39964370. Its totient is φ = 39964368.

The previous prime is 39964357. The next prime is 39964423. The reversal of 39964369 is 96346993.

39964369 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29160000 + 10804369 = 5400^2 + 3287^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-39964369 is a prime.

It is a super-2 number, since 2×39964369² = 3194301579136322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (39964469) 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, 19982184 + 19982185.

It is an arithmetic number, because the mean of its divisors is an integer number (19982185).

Almost surely, 2^39964369 is an apocalyptic number.

It is an amenable number.

39964369 is a deficient number, since it is larger than the sum of its proper divisors (1).

39964369 is an equidigital number, since it uses as much as digits as its factorization.

39964369 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 944784, while the sum is 49.

The square root of 39964369 is about 6321.7378148734. The cubic root of 39964369 is about 341.8936122470.

The spelling of 39964369 in words is "thirty-nine million, nine hundred sixty-four thousand, three hundred sixty-nine".