3967938992 has 80 divisors (see below), whose sum is σ = 8457172992. Its totient is φ = 1795322880.

The previous prime is 3967938983. The next prime is 3967939013. The reversal of 3967938992 is 2998397693.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1372973 + ... + 1375859.

Almost surely, 2^3967938992 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 3967938992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4228586496).

3967938992 is an abundant number, since it is smaller than the sum of its proper divisors (4489234000).

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

3967938992 is a wasteful number, since it uses less digits than its factorization.

3967938992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3106 (or 3100 counting only the distinct ones).

The product of its digits is 39680928, while the sum is 65.

The square root of 3967938992 is about 62991.5787387489. The cubic root of 3967938992 is about 1583.1485301528.

The spelling of 3967938992 in words is "three billion, nine hundred sixty-seven million, nine hundred thirty-eight thousand, nine hundred ninety-two".