4197978864 has 60 divisors (see below), whose sum is σ = 12366861000. Its totient is φ = 1325676672.

The previous prime is 4197978833. The next prime is 4197978881. The reversal of 4197978864 is 4688797914.

4197978864 is a `hidden beast` number, since 419 + 79 + 78 + 86 + 4 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 764439 + ... + 769910.

It is an arithmetic number, because the mean of its divisors is an integer number (206114350).

Almost surely, 2^4197978864 is an apocalyptic number.

It is an amenable number.

4197978864 is an abundant number, since it is smaller than the sum of its proper divisors (8168882136).

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

4197978864 is a wasteful number, since it uses less digits than its factorization.

4197978864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1534382 (or 1534373 counting only the distinct ones).

The product of its digits is 24385536, while the sum is 63.

The square root of 4197978864 is about 64791.8117048752. The cubic root of 4197978864 is about 1613.1697982513.

The spelling of 4197978864 in words is "four billion, one hundred ninety-seven million, nine hundred seventy-eight thousand, eight hundred sixty-four".