3961397586276 has 729 divisors, whose sum is σ = 12312369021771. Its totient is φ = 1073056398336.

The previous prime is 3961397586151. The next prime is 3961397586283. The reversal of 3961397586276 is 6726857931693.

The square root of 3961397586276 is 1990326.

It is a perfect power (a square), and thus also a powerful number.

3961397586276 is a `hidden beast` number, since 3 + 9 + 6 + 1 + 39 + 7 + 586 + 2 + 7 + 6 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 35768643876 + 3925628942400 = 189126^2 + 1981320^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 242 ways as a sum of consecutive naturals, for example, 50144273205 + ... + 50144273283.

Almost surely, 2^{3961397586276} is an apocalyptic number.

3961397586276 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

3961397586276 is the 1990326-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3961397586276

3961397586276 is an abundant number, since it is smaller than the sum of its proper divisors (8350971435495).

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

3961397586276 is a wasteful number, since it uses less digits than its factorization.

3961397586276 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266 (or 133 counting only the distinct ones).

The product of its digits is 617258880, while the sum is 72.

The spelling of 3961397586276 in words is "three trillion, nine hundred sixty-one billion, three hundred ninety-seven million, five hundred eighty-six thousand, two hundred seventy-six".