5918609 has 4 divisors (see below), whose sum is σ = 5935104. Its totient is φ = 5902116.

The previous prime is 5918603. The next prime is 5918623. The reversal of 5918609 is 9068195.

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 an emirpimes, since its reverse is a distinct semiprime: 9068195 = 5 ⋅1813639.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5918609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5918603) 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, 7697 + ... + 8430.

It is an arithmetic number, because the mean of its divisors is an integer number (1483776).

Almost surely, 2^5918609 is an apocalyptic number.

It is an amenable number.

5918609 is a deficient number, since it is larger than the sum of its proper divisors (16495).

5918609 is a wasteful number, since it uses less digits than its factorization.

5918609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16494.

The product of its (nonzero) digits is 19440, while the sum is 38.

The square root of 5918609 is about 2432.8191465869. The cubic root of 5918609 is about 180.8866642922.

The spelling of 5918609 in words is "five million, nine hundred eighteen thousand, six hundred nine".