39864941 has 2 divisors, whose sum is σ = 39864942. Its totient is φ = 39864940.

The previous prime is 39864899. The next prime is 39864959. The reversal of 39864941 is 14946893.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39816100 + 48841 = 6310^2 + 221^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-39864941 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 39864892 and 39864901.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (39864971) 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, 19932470 + 19932471.

It is an arithmetic number, because the mean of its divisors is an integer number (19932471).

Almost surely, 2^39864941 is an apocalyptic number.

It is an amenable number.

39864941 is a deficient number, since it is larger than the sum of its proper divisors (1).

39864941 is an equidigital number, since it uses as much as digits as its factorization.

39864941 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 186624, while the sum is 44.

The square root of 39864941 is about 6313.8689406734. The cubic root of 39864941 is about 341.6098425692.

The spelling of 39864941 in words is "thirty-nine million, eight hundred sixty-four thousand, nine hundred forty-one".