3971867950 has 48 divisors (see below), whose sum is σ = 7503582240. Its totient is φ = 1563909120.

The previous prime is 3971867917. The next prime is 3971867959. The reversal of 3971867950 is 597681793.

It is a junction number, because it is equal to n+sod(n) for n = 3971867891 and 3971867900.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3971867959) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3061702 + ... + 3062998.

It is an arithmetic number, because the mean of its divisors is an integer number (156324630).

Almost surely, 2^3971867950 is an apocalyptic number.

3971867950 is a deficient number, since it is larger than the sum of its proper divisors (3531714290).

3971867950 is a wasteful number, since it uses less digits than its factorization.

3971867950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2221 (or 2216 counting only the distinct ones).

The product of its (nonzero) digits is 2857680, while the sum is 55.

The square root of 3971867950 is about 63022.7573976258. The cubic root of 3971867950 is about 1583.6708896798.

The spelling of 3971867950 in words is "three billion, nine hundred seventy-one million, eight hundred sixty-seven thousand, nine hundred fifty".