5185909 has 4 divisors (see below), whose sum is σ = 5231916. Its totient is φ = 5139904.

The previous prime is 5185889. The next prime is 5185913. The reversal of 5185909 is 9095815.

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 442225 + 4743684 = 665^2 + 2178^2 .

It is a cyclic number.

It is not a de Polignac number, because 5185909 - 2⁵ = 5185877 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 (5185919) 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, 22834 + ... + 23059.

It is an arithmetic number, because the mean of its divisors is an integer number (1307979).

Almost surely, 2^5185909 is an apocalyptic number.

It is an amenable number.

5185909 is a deficient number, since it is larger than the sum of its proper divisors (46007).

5185909 is a wasteful number, since it uses less digits than its factorization.

5185909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46006.

The product of its (nonzero) digits is 16200, while the sum is 37.

The square root of 5185909 is about 2277.2590981265. The cubic root of 5185909 is about 173.0911900768.

The spelling of 5185909 in words is "five million, one hundred eighty-five thousand, nine hundred nine".