39135745 has 16 divisors (see below), whose sum is σ = 51855552. Its totient is φ = 28116160.

The previous prime is 39135743. The next prime is 39135757. The reversal of 39135745 is 54753193.

It is not a de Polignac number, because 39135745 - 2¹ = 39135743 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (39135743) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 279 + ... + 8851.

It is an arithmetic number, because the mean of its divisors is an integer number (3240972).

Almost surely, 2^39135745 is an apocalyptic number.

It is an amenable number.

39135745 is a deficient number, since it is larger than the sum of its proper divisors (12719807).

39135745 is a wasteful number, since it uses less digits than its factorization.

39135745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8672.

The product of its digits is 56700, while the sum is 37.

The square root of 39135745 is about 6255.8568557792. The cubic root of 39135745 is about 339.5141416817.

The spelling of 39135745 in words is "thirty-nine million, one hundred thirty-five thousand, seven hundred forty-five".