5811989 has 8 divisors (see below), whose sum is σ = 5955840. Its totient is φ = 5670000.

The previous prime is 5811979. The next prime is 5812013. The reversal of 5811989 is 9891185.

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

It is a cyclic number.

It is not a de Polignac number, because 5811989 - 2⁸ = 5811733 is a prime.

It is a super-2 number, since 2×5811989² = 67558432272242, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5811959) 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, 7364 + ... + 8114.

It is an arithmetic number, because the mean of its divisors is an integer number (744480).

Almost surely, 2^5811989 is an apocalyptic number.

It is an amenable number.

5811989 is a deficient number, since it is larger than the sum of its proper divisors (143851).

5811989 is a wasteful number, since it uses less digits than its factorization.

5811989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 931.

The product of its digits is 25920, while the sum is 41.

The square root of 5811989 is about 2410.8067114557. The cubic root of 5811989 is about 179.7938895962.

The spelling of 5811989 in words is "five million, eight hundred eleven thousand, nine hundred eighty-nine".