3968859 has 4 divisors (see below), whose sum is σ = 5291816. Its totient is φ = 2645904.

The previous prime is 3968827. The next prime is 3968863. The reversal of 3968859 is 9588693.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9588693 = 3 ⋅3196231.

It is not a de Polignac number, because 3968859 - 2⁵ = 3968827 is a prime.

It is an Ulam number.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3968819) 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, 661474 + ... + 661479.

It is an arithmetic number, because the mean of its divisors is an integer number (1322954).

Almost surely, 2^3968859 is an apocalyptic number.

3968859 is a deficient number, since it is larger than the sum of its proper divisors (1322957).

3968859 is a wasteful number, since it uses less digits than its factorization.

3968859 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1322956.

The product of its digits is 466560, while the sum is 48.

The square root of 3968859 is about 1992.1995381989. The cubic root of 3968859 is about 158.3270877192.

The spelling of 3968859 in words is "three million, nine hundred sixty-eight thousand, eight hundred fifty-nine".