3947231969280 has 912 divisors, whose sum is σ = 15045862497120. Its totient is φ = 990677827584.

The previous prime is 3947231969273. The next prime is 3947231969321. The reversal of 3947231969280 is 829691327493.

3947231969280 is a `hidden beast` number, since 3 + 94 + 72 + 319 + 6 + 92 + 80 = 666.

It is a congruent number.

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 in 47 ways as a sum of consecutive naturals, for example, 232190115832 + ... + 232190115848.

Almost surely, 2^{3947231969280} is an apocalyptic number.

3947231969280 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 3947231969280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7522931248560).

3947231969280 is an abundant number, since it is smaller than the sum of its proper divisors (11098630527840).

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

3947231969280 is an frugal number, since it uses more digits than its factorization.

3947231969280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91 (or 27 counting only the distinct ones).

The product of its (nonzero) digits is 35271936, while the sum is 63.

The spelling of 3947231969280 in words is "three trillion, nine hundred forty-seven billion, two hundred thirty-one million, nine hundred sixty-nine thousand, two hundred eighty".