3971405676 has 96 divisors (see below), whose sum is σ = 11119546368. Its totient is φ = 1078608960.

The previous prime is 3971405651. The next prime is 3971405701. The reversal of 3971405676 is 6765041793.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (3971405651) and next prime (3971405701).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 308611 + ... + 321221.

It is an arithmetic number, because the mean of its divisors is an integer number (115828608).

Almost surely, 2^3971405676 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 3971405676, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5559773184).

3971405676 is an abundant number, since it is smaller than the sum of its proper divisors (7148140692).

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

3971405676 is a wasteful number, since it uses less digits than its factorization.

3971405676 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12811 (or 12809 counting only the distinct ones).

The product of its (nonzero) digits is 952560, while the sum is 48.

The square root of 3971405676 is about 63019.0897744485. The cubic root of 3971405676 is about 1583.6094477009.

The spelling of 3971405676 in words is "three billion, nine hundred seventy-one million, four hundred five thousand, six hundred seventy-six".