39959849 has 2 divisors, whose sum is σ = 39959850. Its totient is φ = 39959848.

The previous prime is 39959807. The next prime is 39959861. The reversal of 39959849 is 94895993.

39959849 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., 20976400 + 18983449 = 4580^2 + 4357^2 .

It is a cyclic number.

It is not a de Polignac number, because 39959849 - 2¹² = 39955753 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 39959794 and 39959803.

It is not a weakly prime, because it can be changed into another prime (39959449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19979924 + 19979925.

It is an arithmetic number, because the mean of its divisors is an integer number (19979925).

Almost surely, 2^39959849 is an apocalyptic number.

It is an amenable number.

39959849 is a deficient number, since it is larger than the sum of its proper divisors (1).

39959849 is an equidigital number, since it uses as much as digits as its factorization.

39959849 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3149280, while the sum is 56.

The square root of 39959849 is about 6321.3803081289. The cubic root of 39959849 is about 341.8807222867.

It can be divided in two parts, 3995984 and 9, that added together give a palindrome (3995993).

The spelling of 39959849 in words is "thirty-nine million, nine hundred fifty-nine thousand, eight hundred forty-nine".