3967891863 has 8 divisors (see below), whose sum is σ = 5697485808. Its totient is φ = 2441779584.

The previous prime is 3967891801. The next prime is 3967891883. The reversal of 3967891863 is 3681987693.

3967891863 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 3967891863 - 2¹² = 3967887767 is a prime.

It is a super-2 number, since 2×3967891863² = 31488331672923221538, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 3967891797 and 3967891806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3967891883) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50870370 + ... + 50870447.

It is an arithmetic number, because the mean of its divisors is an integer number (712185726).

Almost surely, 2^3967891863 is an apocalyptic number.

3967891863 is a deficient number, since it is larger than the sum of its proper divisors (1729593945).

3967891863 is a wasteful number, since it uses less digits than its factorization.

3967891863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101740833.

The product of its digits is 11757312, while the sum is 60.

The square root of 3967891863 is about 62991.2046479507. The cubic root of 3967891863 is about 1583.1422622051.

The spelling of 3967891863 in words is "three billion, nine hundred sixty-seven million, eight hundred ninety-one thousand, eight hundred sixty-three".