5997989 has 4 divisors (see below), whose sum is σ = 6041280. Its totient is φ = 5954700.

The previous prime is 5997967. The next prime is 5998001. The reversal of 5997989 is 9897995.

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.

It is a cyclic number.

It is not a de Polignac number, because 5997989 - 2¹⁶ = 5932453 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 (5997919) 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, 21437 + ... + 21714.

It is an arithmetic number, because the mean of its divisors is an integer number (1510320).

Almost surely, 2^5997989 is an apocalyptic number.

It is an amenable number.

5997989 is a deficient number, since it is larger than the sum of its proper divisors (43291).

5997989 is a wasteful number, since it uses less digits than its factorization.

5997989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43290.

The product of its digits is 1837080, while the sum is 56.

The square root of 5997989 is about 2449.0792147254. The cubic root of 5997989 is about 181.6917557396.

The spelling of 5997989 in words is "five million, nine hundred ninety-seven thousand, nine hundred eighty-nine".