39852749 has 2 divisors, whose sum is σ = 39852750. Its totient is φ = 39852748.

The previous prime is 39852707. The next prime is 39852773. The reversal of 39852749 is 94725893.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 34140649 + 5712100 = 5843^2 + 2390^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-39852749 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (39852349) 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, 19926374 + 19926375.

It is an arithmetic number, because the mean of its divisors is an integer number (19926375).

Almost surely, 2^39852749 is an apocalyptic number.

It is an amenable number.

39852749 is a deficient number, since it is larger than the sum of its proper divisors (1).

39852749 is an equidigital number, since it uses as much as digits as its factorization.

39852749 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 544320, while the sum is 47.

The square root of 39852749 is about 6312.9033732507. The cubic root of 39852749 is about 341.5750138721.

The spelling of 39852749 in words is "thirty-nine million, eight hundred fifty-two thousand, seven hundred forty-nine".