3994871998 has 8 divisors (see below), whose sum is σ = 6453254808. Its totient is φ = 1843787064.

The previous prime is 3994871977. The next prime is 3994872017. The reversal of 3994871998 is 8991784993.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 76824436 + ... + 76824487.

It is an arithmetic number, because the mean of its divisors is an integer number (806656851).

Almost surely, 2^3994871998 is an apocalyptic number.

3994871998 is a deficient number, since it is larger than the sum of its proper divisors (2458382810).

3994871998 is a wasteful number, since it uses less digits than its factorization.

3994871998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153648938.

The product of its digits is 35271936, while the sum is 67.

The square root of 3994871998 is about 63204.9997864093. Note that the first 3 decimals coincide. The cubic root of 3994871998 is about 1586.7224122326.

The spelling of 3994871998 in words is "three billion, nine hundred ninety-four million, eight hundred seventy-one thousand, nine hundred ninety-eight".