5709989 has 4 divisors (see below), whose sum is σ = 5726700. Its totient is φ = 5693280.

The previous prime is 5709953. The next prime is 5710021. The reversal of 5709989 is 9899075.

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 3204100 + 2505889 = 1790^2 + 1583^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5709989 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 (5709929) 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, 7832 + ... + 8529.

It is an arithmetic number, because the mean of its divisors is an integer number (1431675).

Almost surely, 2^5709989 is an apocalyptic number.

It is an amenable number.

5709989 is a deficient number, since it is larger than the sum of its proper divisors (16711).

5709989 is a wasteful number, since it uses less digits than its factorization.

5709989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16710.

The product of its (nonzero) digits is 204120, while the sum is 47.

The square root of 5709989 is about 2389.5583273902. The cubic root of 5709989 is about 178.7358858890.

The spelling of 5709989 in words is "five million, seven hundred nine thousand, nine hundred eighty-nine".