3990578849628 has 96 divisors (see below), whose sum is σ = 11025656893440. Its totient is φ = 1099283857920.

The previous prime is 3990578849581. The next prime is 3990578849683. The reversal of 3990578849628 is 8269488750993.

It is a Smith number, since the sum of its digits (78) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2148001 + ... + 3548952.

It is an arithmetic number, because the mean of its divisors is an integer number (114850592640).

Almost surely, 2^{3990578849628} is an apocalyptic number.

It is an amenable number.

3990578849628 is an abundant number, since it is smaller than the sum of its proper divisors (7035078043812).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3990578849628 is a wasteful number, since it uses less digits than its factorization.

3990578849628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5697267 (or 5697265 counting only the distinct ones).

The product of its (nonzero) digits is 1881169920, while the sum is 78.

The spelling of 3990578849628 in words is "three trillion, nine hundred ninety billion, five hundred seventy-eight million, eight hundred forty-nine thousand, six hundred twenty-eight".