5442809 has 4 divisors (see below), whose sum is σ = 5535120. Its totient is φ = 5350500.

The previous prime is 5442781. The next prime is 5442817. The reversal of 5442809 is 9082445.

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: 9082445 = 5 ⋅1816489.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5442809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5442859) 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, 46067 + ... + 46184.

It is an arithmetic number, because the mean of its divisors is an integer number (1383780).

Almost surely, 2^5442809 is an apocalyptic number.

5442809 is a gapful number since it is divisible by the number (59) formed by its first and last digit.

It is an amenable number.

5442809 is a deficient number, since it is larger than the sum of its proper divisors (92311).

5442809 is an equidigital number, since it uses as much as digits as its factorization.

5442809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92310.

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 5442809 is about 2332.9828546305. The cubic root of 5442809 is about 175.9034529877.

The spelling of 5442809 in words is "five million, four hundred forty-two thousand, eight hundred nine".