3978667044 has 72 divisors (see below), whose sum is σ = 11126082240. Its totient is φ = 1188667200.

The previous prime is 3978667039. The next prime is 3978667067. The reversal of 3978667044 is 4407668793.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 42639 + ... + 98870.

It is an arithmetic number, because the mean of its divisors is an integer number (154528920).

Almost surely, 2^3978667044 is an apocalyptic number.

It is an amenable number.

3978667044 is an abundant number, since it is smaller than the sum of its proper divisors (7147415196).

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

3978667044 is a wasteful number, since it uses less digits than its factorization.

3978667044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141601 (or 141596 counting only the distinct ones).

The product of its (nonzero) digits is 6096384, while the sum is 54.

The square root of 3978667044 is about 63076.6759111480. The cubic root of 3978667044 is about 1584.5740238574.

The spelling of 3978667044 in words is "three billion, nine hundred seventy-eight million, six hundred sixty-seven thousand, forty-four".