5206421909 has 8 divisors (see below), whose sum is σ = 5619694080. Its totient is φ = 4794975216.

The previous prime is 5206421867. The next prime is 5206421929. The reversal of 5206421909 is 9091246025.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 5206421909 - 2⁸ = 5206421653 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5206421929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 450437 + ... + 461850.

It is an arithmetic number, because the mean of its divisors is an integer number (702461760).

Almost surely, 2^5206421909 is an apocalyptic number.

It is an amenable number.

5206421909 is a deficient number, since it is larger than the sum of its proper divisors (413272171).

5206421909 is a wasteful number, since it uses less digits than its factorization.

5206421909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 912739.

The product of its (nonzero) digits is 38880, while the sum is 38.

The square root of 5206421909 is about 72155.5396972402. The cubic root of 5206421909 is about 1733.1911107132.

The spelling of 5206421909 in words is "five billion, two hundred six million, four hundred twenty-one thousand, nine hundred nine".