3987294549328 has 20 divisors (see below), whose sum is σ = 7812185250420. Its totient is φ = 1971246742784.

The previous prime is 3987294549257. The next prime is 3987294549379. The reversal of 3987294549328 is 8239454927893.

It can be written as a sum of positive squares in 2 ways, for example, as 899022556224 + 3088271993104 = 948168^2 + 1757348^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1400031775 + ... + 1400034622.

It is an arithmetic number, because the mean of its divisors is an integer number (390609262521).

Almost surely, 2^{3987294549328} is an apocalyptic number.

It is an amenable number.

3987294549328 is a deficient number, since it is larger than the sum of its proper divisors (3824890701092).

3987294549328 is a wasteful number, since it uses less digits than its factorization.

3987294549328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2800066494 (or 2800066488 counting only the distinct ones).

The product of its digits is 940584960, while the sum is 73.

The spelling of 3987294549328 in words is "three trillion, nine hundred eighty-seven billion, two hundred ninety-four million, five hundred forty-nine thousand, three hundred twenty-eight".