5221946209 has 4 divisors (see below), whose sum is σ = 5275780804. Its totient is φ = 5168111616.

The previous prime is 5221946207. The next prime is 5221946251. The reversal of 5221946209 is 9026491225.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1103900625 + 4118045584 = 33225^2 + 64172^2 .

It is a cyclic number.

It is not a de Polignac number, because 5221946209 - 2¹ = 5221946207 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5221946201) 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, 26917152 + ... + 26917345.

It is an arithmetic number, because the mean of its divisors is an integer number (1318945201).

Almost surely, 2^5221946209 is an apocalyptic number.

It is an amenable number.

5221946209 is a deficient number, since it is larger than the sum of its proper divisors (53834595).

5221946209 is an equidigital number, since it uses as much as digits as its factorization.

5221946209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53834594.

The product of its (nonzero) digits is 77760, while the sum is 40.

The square root of 5221946209 is about 72263.0348726097. The cubic root of 5221946209 is about 1734.9120546076.

The spelling of 5221946209 in words is "five billion, two hundred twenty-one million, nine hundred forty-six thousand, two hundred nine".