39625913 has 2 divisors, whose sum is σ = 39625914. Its totient is φ = 39625912.

The previous prime is 39625903. The next prime is 39625921. The reversal of 39625913 is 31952693.

39625913 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., 20502784 + 19123129 = 4528^2 + 4373^2 .

It is a cyclic number.

It is not a de Polignac number, because 39625913 - 2⁴ = 39625897 is a prime.

It is not a weakly prime, because it can be changed into another prime (39625903) 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, 19812956 + 19812957.

It is an arithmetic number, because the mean of its divisors is an integer number (19812957).

Almost surely, 2^39625913 is an apocalyptic number.

It is an amenable number.

39625913 is a deficient number, since it is larger than the sum of its proper divisors (1).

39625913 is an equidigital number, since it uses as much as digits as its factorization.

39625913 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 43740, while the sum is 38.

The square root of 39625913 is about 6294.9116753136. The cubic root of 39625913 is about 340.9257154516.

The spelling of 39625913 in words is "thirty-nine million, six hundred twenty-five thousand, nine hundred thirteen".