39500945 has 32 divisors (see below), whose sum is σ = 55520640. Its totient is φ = 26659840.

The previous prime is 39500939. The next prime is 39500947. The reversal of 39500945 is 54900593.

39500945 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-39500945 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (39500947) 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 31 ways as a sum of consecutive naturals, for example, 77351 + ... + 77859.

It is an arithmetic number, because the mean of its divisors is an integer number (1735020).

Almost surely, 2^39500945 is an apocalyptic number.

It is an amenable number.

39500945 is a deficient number, since it is larger than the sum of its proper divisors (16019695).

39500945 is a wasteful number, since it uses less digits than its factorization.

39500945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 625.

The product of its (nonzero) digits is 24300, while the sum is 35.

The square root of 39500945 is about 6284.9777247020. The cubic root of 39500945 is about 340.5669462548.

The spelling of 39500945 in words is "thirty-nine million, five hundred thousand, nine hundred forty-five".