39875513 has 2 divisors, whose sum is σ = 39875514. Its totient is φ = 39875512.

The previous prime is 39875503. The next prime is 39875531. The reversal of 39875513 is 31557893.

It is a happy number.

39875513 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

Together with next prime (39875531) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 39476089 + 399424 = 6283^2 + 632^2 .

It is a cyclic number.

It is not a de Polignac number, because 39875513 - 2¹⁴ = 39859129 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (39875503) 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, 19937756 + 19937757.

It is an arithmetic number, because the mean of its divisors is an integer number (19937757).

Almost surely, 2^39875513 is an apocalyptic number.

It is an amenable number.

39875513 is a deficient number, since it is larger than the sum of its proper divisors (1).

39875513 is an equidigital number, since it uses as much as digits as its factorization.

39875513 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 113400, while the sum is 41.

The square root of 39875513 is about 6314.7060897559. The cubic root of 39875513 is about 341.6400376893.

It can be divided in two parts, 398755 and 13, that multiplied together give a palindrome (5183815).

The spelling of 39875513 in words is "thirty-nine million, eight hundred seventy-five thousand, five hundred thirteen".