39930391328 has 12 divisors (see below), whose sum is σ = 78612957990. Its totient is φ = 19965195648.

The previous prime is 39930391321. The next prime is 39930391331. The reversal of 39930391328 is 82319303993.

It can be written as a sum of positive squares in only one way, i.e., 38248407184 + 1681984144 = 195572^2 + 41012^2 .

It is not an unprimeable number, because it can be changed into a prime (39930391321) 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 as a sum of consecutive naturals, namely, 623912333 + ... + 623912396.

Almost surely, 2^39930391328 is an apocalyptic number.

It is an amenable number.

39930391328 is a deficient number, since it is larger than the sum of its proper divisors (38682566662).

39930391328 is a wasteful number, since it uses less digits than its factorization.

39930391328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1247824739 (or 1247824731 counting only the distinct ones).

The product of its (nonzero) digits is 944784, while the sum is 50.

The spelling of 39930391328 in words is "thirty-nine billion, nine hundred thirty million, three hundred ninety-one thousand, three hundred twenty-eight".