39378049 has 2 divisors, whose sum is σ = 39378050. Its totient is φ = 39378048.

The previous prime is 39378041. The next prime is 39378071. The reversal of 39378049 is 94087393.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38837824 + 540225 = 6232^2 + 735^2 .

It is an emirp because it is prime and its reverse (94087393) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 39378049 - 2³ = 39378041 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 39377996 and 39378014.

It is not a weakly prime, because it can be changed into another prime (39378041) 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, 19689024 + 19689025.

It is an arithmetic number, because the mean of its divisors is an integer number (19689025).

Almost surely, 2^39378049 is an apocalyptic number.

It is an amenable number.

39378049 is a deficient number, since it is larger than the sum of its proper divisors (1).

39378049 is an equidigital number, since it uses as much as digits as its factorization.

39378049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 163296, while the sum is 43.

The square root of 39378049 is about 6275.1931444379. The cubic root of 39378049 is about 340.2133868099.

The spelling of 39378049 in words is "thirty-nine million, three hundred seventy-eight thousand, forty-nine".