3987104778 has 24 divisors (see below), whose sum is σ = 8849429316. Its totient is φ = 1296619200.

The previous prime is 3987104777. The next prime is 3987104789. The reversal of 3987104778 is 8774017893.

It can be written as a sum of positive squares in 2 ways, for example, as 3478286529 + 508818249 = 58977^2 + 22557^2 .

It is not an unprimeable number, because it can be changed into a prime (3987104777) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2700553 + ... + 2702028.

Almost surely, 2^3987104778 is an apocalyptic number.

3987104778 is an abundant number, since it is smaller than the sum of its proper divisors (4862324538).

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

3987104778 is a wasteful number, since it uses less digits than its factorization.

3987104778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5402630 (or 5402627 counting only the distinct ones).

The product of its (nonzero) digits is 2370816, while the sum is 54.

The square root of 3987104778 is about 63143.5252262653. The cubic root of 3987104778 is about 1585.6933915157.

The spelling of 3987104778 in words is "three billion, nine hundred eighty-seven million, one hundred four thousand, seven hundred seventy-eight".