5409018 has 40 divisors (see below), whose sum is σ = 12253428. Its totient is φ = 1783296.

The previous prime is 5409017. The next prime is 5409031. The reversal of 5409018 is 8109045.

It can be written as a sum of positive squares in 2 ways, for example, as 5349969 + 59049 = 2313^2 + 243^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 5408982 and 5409000.

It is not an unprimeable number, because it can be changed into a prime (5409017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 27930 + ... + 28122.

Almost surely, 2^5409018 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5409018, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6126714).

5409018 is an abundant number, since it is smaller than the sum of its proper divisors (6844410).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5409018 is a wasteful number, since it uses less digits than its factorization.

5409018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 380 (or 371 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 5409018 is about 2325.7295629544. The cubic root of 5409018 is about 175.5386721703.

Adding to 5409018 its sum of digits (27), we get a palindrome (5409045).

The spelling of 5409018 in words is "five million, four hundred nine thousand, eighteen".