39749747 has 2 divisors, whose sum is σ = 39749748. Its totient is φ = 39749746.

The previous prime is 39749711. The next prime is 39749753. The reversal of 39749747 is 74794793.

39749747 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 is a cyclic number.

It is not a de Polignac number, because 39749747 - 2⁶ = 39749683 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 39749695 and 39749704.

It is not a weakly prime, because it can be changed into another prime (39749707) 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, 19874873 + 19874874.

It is an arithmetic number, because the mean of its divisors is an integer number (19874874).

Almost surely, 2^39749747 is an apocalyptic number.

39749747 is a deficient number, since it is larger than the sum of its proper divisors (1).

39749747 is an equidigital number, since it uses as much as digits as its factorization.

39749747 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1333584, while the sum is 50.

The square root of 39749747 is about 6304.7400422222. The cubic root of 39749747 is about 341.2804857664.

The spelling of 39749747 in words is "thirty-nine million, seven hundred forty-nine thousand, seven hundred forty-seven".