3971436216 has 32 divisors (see below), whose sum is σ = 10831190400. Its totient is φ = 1203465440.

The previous prime is 3971436173. The next prime is 3971436223. The reversal of 3971436216 is 6126341793.

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 7 ways as a sum of consecutive naturals, for example, 7521396 + ... + 7521923.

It is an arithmetic number, because the mean of its divisors is an integer number (338474700).

Almost surely, 2^3971436216 is an apocalyptic number.

It is an amenable number.

3971436216 is an abundant number, since it is smaller than the sum of its proper divisors (6859754184).

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

3971436216 is a wasteful number, since it uses less digits than its factorization.

3971436216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15043339 (or 15043335 counting only the distinct ones).

The product of its digits is 163296, while the sum is 42.

The square root of 3971436216 is about 63019.3320815129. The cubic root of 3971436216 is about 1583.6135069948.

The spelling of 3971436216 in words is "three billion, nine hundred seventy-one million, four hundred thirty-six thousand, two hundred sixteen".