5209847 has 4 divisors (see below), whose sum is σ = 5308200. Its totient is φ = 5111496.

The previous prime is 5209823. The next prime is 5209849. The reversal of 5209847 is 7489025.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 5209847 - 2⁶ = 5209783 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 (5209849) 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, 49097 + ... + 49202.

It is an arithmetic number, because the mean of its divisors is an integer number (1327050).

Almost surely, 2^5209847 is an apocalyptic number.

5209847 is a deficient number, since it is larger than the sum of its proper divisors (98353).

5209847 is an equidigital number, since it uses as much as digits as its factorization.

5209847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98352.

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 5209847 is about 2282.5089265981. The cubic root of 5209847 is about 173.3571092468.

The spelling of 5209847 in words is "five million, two hundred nine thousand, eight hundred forty-seven".