4039645388 has 12 divisors (see below), whose sum is σ = 7376743920. Its totient is φ = 1932004272.

The previous prime is 4039645387. The next prime is 4039645397. The reversal of 4039645388 is 8835469304.

It is a happy number.

It is a hoax number, since the sum of its digits (50) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (4039645387) 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 3 ways as a sum of consecutive naturals, for example, 21954503 + ... + 21954686.

It is an arithmetic number, because the mean of its divisors is an integer number (614728660).

Almost surely, 2^4039645388 is an apocalyptic number.

It is an amenable number.

4039645388 is a deficient number, since it is larger than the sum of its proper divisors (3337098532).

4039645388 is a wasteful number, since it uses less digits than its factorization.

4039645388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43909216 (or 43909214 counting only the distinct ones).

The product of its (nonzero) digits is 2488320, while the sum is 50.

The square root of 4039645388 is about 63558.2047260619. The cubic root of 4039645388 is about 1592.6282478514.

The spelling of 4039645388 in words is "four billion, thirty-nine million, six hundred forty-five thousand, three hundred eighty-eight".