3994986240 has 432 divisors, whose sum is σ = 15978912768. Its totient is φ = 902651904.

The previous prime is 3994986239. The next prime is 3994986253. The reversal of 3994986240 is 426894993.

3994986240 is a `hidden beast` number, since 3 + 9 + 9 + 4 + 9 + 8 + 624 + 0 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 8628249 + ... + 8628711.

It is an arithmetic number, because the mean of its divisors is an integer number (36988224).

Almost surely, 2^3994986240 is an apocalyptic number.

3994986240 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3994986240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7989456384).

3994986240 is an abundant number, since it is smaller than the sum of its proper divisors (11983926528).

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

3994986240 is a wasteful number, since it uses less digits than its factorization.

3994986240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 604 (or 587 counting only the distinct ones).

The product of its (nonzero) digits is 3359232, while the sum is 54.

The square root of 3994986240 is about 63205.9035217439. The cubic root of 3994986240 is about 1586.7375373408.

The spelling of 3994986240 in words is "three billion, nine hundred ninety-four million, nine hundred eighty-six thousand, two hundred forty".