5406209 has 8 divisors (see below), whose sum is σ = 5621160. Its totient is φ = 5193216.

The previous prime is 5406199. The next prime is 5406211. The reversal of 5406209 is 9026045.

It can be written as a sum of positive squares in 4 ways, for example, as 102400 + 5303809 = 320^2 + 2303^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 5406209 - 2¹² = 5402113 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (5406109) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7697 + ... + 8369.

It is an arithmetic number, because the mean of its divisors is an integer number (702645).

Almost surely, 2^5406209 is an apocalyptic number.

It is an amenable number.

5406209 is a deficient number, since it is larger than the sum of its proper divisors (214951).

5406209 is a wasteful number, since it uses less digits than its factorization.

5406209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 979.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 5406209 is about 2325.1255880059. The cubic root of 5406209 is about 175.5082801157.

The spelling of 5406209 in words is "five million, four hundred six thousand, two hundred nine".