3965255867 has 4 divisors (see below), whose sum is σ = 4137658320. Its totient is φ = 3792853416.

The previous prime is 3965255857. The next prime is 3965255881. The reversal of 3965255867 is 7685525693.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7685525693 = 23 ⋅334153291.

It is a cyclic number.

It is not a de Polignac number, because 3965255867 - 2¹⁶ = 3965190331 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3965255857) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 86201192 + ... + 86201237.

It is an arithmetic number, because the mean of its divisors is an integer number (1034414580).

Almost surely, 2^3965255867 is an apocalyptic number.

3965255867 is a deficient number, since it is larger than the sum of its proper divisors (172402453).

3965255867 is a wasteful number, since it uses less digits than its factorization.

3965255867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172402452.

The product of its digits is 13608000, while the sum is 56.

The square root of 3965255867 is about 62970.2776474743. The cubic root of 3965255867 is about 1582.7916073926.

The spelling of 3965255867 in words is "three billion, nine hundred sixty-five million, two hundred fifty-five thousand, eight hundred sixty-seven".