3994374688 has 12 divisors (see below), whose sum is σ = 7863925230. Its totient is φ = 1997187328.

The previous prime is 3994374641. The next prime is 3994374697. The reversal of 3994374688 is 8864734993.

It can be written as a sum of positive squares in only one way, i.e., 2526871824 + 1467502864 = 50268^2 + 38308^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62412073 + ... + 62412136.

Almost surely, 2^3994374688 is an apocalyptic number.

It is an amenable number.

3994374688 is a deficient number, since it is larger than the sum of its proper divisors (3869550542).

3994374688 is a wasteful number, since it uses less digits than its factorization.

3994374688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124824219 (or 124824211 counting only the distinct ones).

The product of its digits is 31352832, while the sum is 61.

The square root of 3994374688 is about 63201.0655606375. The cubic root of 3994374688 is about 1586.6565673470.

The spelling of 3994374688 in words is "three billion, nine hundred ninety-four million, three hundred seventy-four thousand, six hundred eighty-eight".