5999989 has 4 divisors (see below), whose sum is σ = 6005440. Its totient is φ = 5994540.

The previous prime is 5999947. The next prime is 5999993. The reversal of 5999989 is 9899995.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5999989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5999909) 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, 429 + ... + 3490.

It is an arithmetic number, because the mean of its divisors is an integer number (1501360).

Almost surely, 2^5999989 is an apocalyptic number.

It is an amenable number.

5999989 is a deficient number, since it is larger than the sum of its proper divisors (5451).

5999989 is a wasteful number, since it uses less digits than its factorization.

5999989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5450.

The product of its digits is 2361960, while the sum is 58.

The square root of 5999989 is about 2449.4874974166. The cubic root of 5999989 is about 181.7119482369.

The spelling of 5999989 in words is "five million, nine hundred ninety-nine thousand, nine hundred eighty-nine".