5428209 has 4 divisors (see below), whose sum is σ = 7237616. Its totient is φ = 3618804.

The previous prime is 5428187. The next prime is 5428211. The reversal of 5428209 is 9028245.

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.

It is not a de Polignac number, because 5428209 - 2¹³ = 5420017 is a prime.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5428229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 904699 + ... + 904704.

It is an arithmetic number, because the mean of its divisors is an integer number (1809404).

Almost surely, 2^5428209 is an apocalyptic number.

It is an amenable number.

5428209 is a deficient number, since it is larger than the sum of its proper divisors (1809407).

5428209 is a wasteful number, since it uses less digits than its factorization.

5428209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1809406.

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 5428209 is about 2329.8517120195. The cubic root of 5428209 is about 175.7460287496.

The spelling of 5428209 in words is "five million, four hundred twenty-eight thousand, two hundred nine".