3995889 has 8 divisors (see below), whose sum is σ = 5472000. Its totient is φ = 2591856.

The previous prime is 3995851. The next prime is 3995891. The reversal of 3995889 is 9885993.

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

It is not a de Polignac number, because 3995889 - 2⁸ = 3995633 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (3995489) 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, 17889 + ... + 18110.

It is an arithmetic number, because the mean of its divisors is an integer number (684000).

Almost surely, 2^3995889 is an apocalyptic number.

It is an amenable number.

3995889 is a deficient number, since it is larger than the sum of its proper divisors (1476111).

3995889 is a wasteful number, since it uses less digits than its factorization.

3995889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36039.

The product of its digits is 699840, while the sum is 51.

The square root of 3995889 is about 1998.9719857967. The cubic root of 3995889 is about 158.6857048415.

It can be divided in two parts, 3995 and 889, that added together give a palindrome (4884).

The spelling of 3995889 in words is "three million, nine hundred ninety-five thousand, eight hundred eighty-nine".