39749252 has 12 divisors (see below), whose sum is σ = 69605340. Its totient is φ = 19862016.

The previous prime is 39749251. The next prime is 39749261. The reversal of 39749252 is 25294793.

It can be written as a sum of positive squares in 2 ways, for example, as 36192256 + 3556996 = 6016^2 + 1886^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39749251) 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 in 3 ways as a sum of consecutive naturals, for example, 10748 + ... + 13964.

It is an arithmetic number, because the mean of its divisors is an integer number (5800445).

Almost surely, 2^39749252 is an apocalyptic number.

It is an amenable number.

39749252 is a deficient number, since it is larger than the sum of its proper divisors (29856088).

39749252 is a wasteful number, since it uses less digits than its factorization.

39749252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6310 (or 6308 counting only the distinct ones).

The product of its digits is 136080, while the sum is 41.

The square root of 39749252 is about 6304.7007859216. The cubic root of 39749252 is about 341.2790691155.

The spelling of 39749252 in words is "thirty-nine million, seven hundred forty-nine thousand, two hundred fifty-two".