5911989 has 16 divisors (see below), whose sum is σ = 8404992. Its totient is φ = 3687728.

The previous prime is 5911987. The next prime is 5911993. The reversal of 5911989 is 9891195.

It is not a de Polignac number, because 5911989 - 2¹ = 5911987 is a prime.

It is a super-2 number, since 2×5911989² = 69903227872242, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 5911989.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5911981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2332 + ... + 4154.

It is an arithmetic number, because the mean of its divisors is an integer number (525312).

Almost surely, 2^5911989 is an apocalyptic number.

It is an amenable number.

5911989 is a deficient number, since it is larger than the sum of its proper divisors (2493003).

5911989 is a wasteful number, since it uses less digits than its factorization.

5911989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1896.

The product of its digits is 29160, while the sum is 42.

The square root of 5911989 is about 2431.4582044526. The cubic root of 5911989 is about 180.8191981891.

The spelling of 5911989 in words is "five million, nine hundred eleven thousand, nine hundred eighty-nine".