4195989 has 24 divisors (see below), whose sum is σ = 7152320. Its totient is φ = 2381616.

The previous prime is 4195973. The next prime is 4195999. The reversal of 4195989 is 9895914.

It is not a de Polignac number, because 4195989 - 2⁴ = 4195973 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4195949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 28087 + ... + 28235.

Almost surely, 2^4195989 is an apocalyptic number.

It is an amenable number.

4195989 is a deficient number, since it is larger than the sum of its proper divisors (2956331).

4195989 is an equidigital number, since it uses as much as digits as its factorization.

4195989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 314 (or 159 counting only the distinct ones).

The product of its digits is 116640, while the sum is 45.

The square root of 4195989 is about 2048.4113356453. The cubic root of 4195989 is about 161.2914874320.

It can be divided in two parts, 4195 and 989, that added together give a square (5184 = 72²).

The spelling of 4195989 in words is "four million, one hundred ninety-five thousand, nine hundred eighty-nine".