3994798464 has 192 divisors, whose sum is σ = 11886264000. Its totient is φ = 1287069696.

The previous prime is 3994798441. The next prime is 3994798519. The reversal of 3994798464 is 4648974993.

It is a tau number, because it is divible by the number of its divisors (192).

It is a congruent 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, 4818402 + ... + 4819230.

It is an arithmetic number, because the mean of its divisors is an integer number (61907625).

Almost surely, 2^3994798464 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3994798464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5943132000).

3994798464 is an abundant number, since it is smaller than the sum of its proper divisors (7891465536).

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

3994798464 is a wasteful number, since it uses less digits than its factorization.

3994798464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 985 (or 970 counting only the distinct ones).

The product of its digits is 47029248, while the sum is 63.

The square root of 3994798464 is about 63204.4180734227. The cubic root of 3994798464 is about 1586.7126765213.

The spelling of 3994798464 in words is "three billion, nine hundred ninety-four million, seven hundred ninety-eight thousand, four hundred sixty-four".