4004619978 has 16 divisors (see below), whose sum is σ = 8204587776. Its totient is φ = 1302315360.

The previous prime is 4004619973. The next prime is 4004619991. The reversal of 4004619978 is 8799164004.

It is not an unprimeable number, because it can be changed into a prime (4004619973) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8139226 + ... + 8139717.

It is an arithmetic number, because the mean of its divisors is an integer number (512786736).

Almost surely, 2^4004619978 is an apocalyptic number.

4004619978 is an abundant number, since it is smaller than the sum of its proper divisors (4199967798).

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

4004619978 is a wasteful number, since it uses less digits than its factorization.

4004619978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16278989.

The product of its (nonzero) digits is 435456, while the sum is 48.

The square root of 4004619978 is about 63282.0667962101. The cubic root of 4004619978 is about 1588.0119633236.

The spelling of 4004619978 in words is "four billion, four million, six hundred nineteen thousand, nine hundred seventy-eight".