5979989 has 4 divisors (see below), whose sum is σ = 5995020. Its totient is φ = 5964960.

The previous prime is 5979983. The next prime is 5979991. The reversal of 5979989 is 9899795.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2146225 + 3833764 = 1465^2 + 1958^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5979989 is a prime.

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 (5979983) 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, 6902 + ... + 7719.

It is an arithmetic number, because the mean of its divisors is an integer number (1498755).

Almost surely, 2^5979989 is an apocalyptic number.

It is an amenable number.

5979989 is a deficient number, since it is larger than the sum of its proper divisors (15031).

5979989 is a wasteful number, since it uses less digits than its factorization.

5979989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15030.

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

The square root of 5979989 is about 2445.4016030092. The cubic root of 5979989 is about 181.5098209491.

The spelling of 5979989 in words is "five million, nine hundred seventy-nine thousand, nine hundred eighty-nine".