3994979223950 has 48 divisors (see below), whose sum is σ = 8729728042896. Its totient is φ = 1340972044800.

The previous prime is 3994979223947. The next prime is 3994979224009. The reversal of 3994979223950 is 593229794993.

It is a Curzon number.

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 23 ways as a sum of consecutive naturals, for example, 279362027 + ... + 279376326.

It is an arithmetic number, because the mean of its divisors is an integer number (181869334227).

Almost surely, 2^{3994979223950} is an apocalyptic number.

3994979223950 is an abundant number, since it is smaller than the sum of its proper divisors (4734748818946).

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

3994979223950 is a wasteful number, since it uses less digits than its factorization.

3994979223950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 558738389 (or 558738384 counting only the distinct ones).

The product of its (nonzero) digits is 297606960, while the sum is 71.

The spelling of 3994979223950 in words is "three trillion, nine hundred ninety-four billion, nine hundred seventy-nine million, two hundred twenty-three thousand, nine hundred fifty".