39640330 has 16 divisors (see below), whose sum is σ = 72563040. Its totient is φ = 15587152.

The previous prime is 39640313. The next prime is 39640409. The reversal of 39640330 is 3304693.

39640330 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 33004 + ... + 34183.

It is an arithmetic number, because the mean of its divisors is an integer number (4535190).

Almost surely, 2^39640330 is an apocalyptic number.

39640330 is a deficient number, since it is larger than the sum of its proper divisors (32922710).

39640330 is a wasteful number, since it uses less digits than its factorization.

39640330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67253.

The product of its (nonzero) digits is 5832, while the sum is 28.

The square root of 39640330 is about 6296.0567024130. The cubic root of 39640330 is about 340.9670564976.

The spelling of 39640330 in words is "thirty-nine million, six hundred forty thousand, three hundred thirty".