39707745 has 64 divisors (see below), whose sum is σ = 81838080. Its totient is φ = 15955200.

The previous prime is 39707743. The next prime is 39707783. The reversal of 39707745 is 54770793.

39707745 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 39707745 - 2¹ = 39707743 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 39707697 and 39707706.

It is not an unprimeable number, because it can be changed into a prime (39707743) 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 in 63 ways as a sum of consecutive naturals, for example, 35251 + ... + 36359.

It is an arithmetic number, because the mean of its divisors is an integer number (1278720).

Almost surely, 2^39707745 is an apocalyptic number.

39707745 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

39707745 is an abundant number, since it is smaller than the sum of its proper divisors (42130335).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

39707745 is a wasteful number, since it uses less digits than its factorization.

39707745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1166.

The product of its (nonzero) digits is 185220, while the sum is 42.

The square root of 39707745 is about 6301.4081759556. The cubic root of 39707745 is about 341.1602374973.

The spelling of 39707745 in words is "thirty-nine million, seven hundred seven thousand, seven hundred forty-five".