39906755 has 16 divisors (see below), whose sum is σ = 56617920. Its totient is φ = 26420352.

The previous prime is 39906751. The next prime is 39906767. The reversal of 39906755 is 55760993.

39906755 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 39906755 - 2² = 39906751 is a prime.

It is not an unprimeable number, because it can be changed into a prime (39906751) 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 15 ways as a sum of consecutive naturals, for example, 18644 + ... + 20673.

It is an arithmetic number, because the mean of its divisors is an integer number (3538620).

Almost surely, 2^39906755 is an apocalyptic number.

39906755 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

39906755 is a deficient number, since it is larger than the sum of its proper divisors (16711165).

39906755 is a wasteful number, since it uses less digits than its factorization.

39906755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39358.

The product of its (nonzero) digits is 255150, while the sum is 44.

The square root of 39906755 is about 6317.1793547437. The cubic root of 39906755 is about 341.7292380610.

The spelling of 39906755 in words is "thirty-nine million, nine hundred six thousand, seven hundred fifty-five".